法定货币与商品货币有何区别？
How do fiat and commodity money differ?
商品货币（如黄金）本身具有内在价值；法定货币的价值来自政府信用与法律强制流通，本身没有固定的内在价值。
Commodity money (like gold) has intrinsic value; fiat money's value comes from government trust and legal-tender laws rather than the material itself.
难度 专业 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#法定货币 #货币史
量化宽松是如何运作的？
How does quantitative easing work?
央行大规模购买政府债券等资产，向金融体系注入准备金，以压低长期利率、刺激借贷与投资，通常在常规降息空间耗尽时使用。
The central bank buys large-scale assets like government bonds to inject reserves, lowering long-term rates and encouraging lending, typically when standard rate cuts are exhausted.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#量化宽松 #央行
为什么中央银行能“创造”货币，而普通人和商业银行不能随便印钱？
Why can the central bank "create" money while ordinary people and commercial banks can't just print it?
货币是现代信用的产物。中央银行垄断现金发行并调控基础货币，商业银行则通过贷款“派生”出存款货币——但这一切都建立在法律和监管之上：央行维系人们对货币的信任，银行受准备金率等约束，法律保证货币被普遍接受。如果人人能印钱，货币会因供给失控而快速贬值甚至崩溃。央行创造货币也并非没有边界，它必须维护价格稳定和金融稳定，过度印钞会引发恶性通胀。
Money is a product of modern credit. The central bank monopolizes cash issuance and steers the monetary base, while commercial banks create deposit money through lending; but all of this rests on law and regulation: the central bank sustains trust in the currency, banks face reserve requirements, and law ensures the money is accepted. If everyone could print, the currency would depreciate fast and collapse. Central banks don't create money without limits either; they must defend price and financial stability, since over-issuance brings hyperinflation.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
《经济学原理》(曼昆)（货币体系章）
Principles of Economics (Mankiw), monetary system chapter
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787301312971（豆瓣书目条目: 经济学原理）
#中央银行 #货币创造 #货币供给
为什么健康的银行也可能被挤兑击垮？存款保险如何改变这一逻辑？
Why can even a sound bank be destroyed by a run, and how does deposit insurance change the logic?
银行用活期存款（可随时提取）支持长期贷款，天然存在期限错配；只要存户同时取款，即使资产优质，银行也得低价抛售资产偿债，造成“自我实现的挤兑”。存款保险通过政府承诺覆盖一定额度的存款，消除存户的挤兑动机，从而稳定体系——这正是美国大萧条后设立FDIC的原因。但保险削弱了存户监督，银行可能更激进，产生道德风险，因此需要配套监管（资本要求、监管审查）和限额赔付。制度设计始终在稳定与激励之间权衡。
Banks fund long-term loans with demand deposits that can be withdrawn anytime—an inherent maturity mismatch; if depositors all withdraw at once, even a solvent bank must fire-sell assets, creating a self-fulfilling run. Deposit insurance removes the incentive to run by government guarantee of deposits up to a limit—which is why the US created the FDIC after the Great Depression. But insurance weakens depositor monitoring, inviting riskier behavior—moral hazard—so it must be paired with capital requirements, supervision, and payout limits. Institutional design is a perpetual trade-off between stability and incentives.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
IMF（《全球金融稳定报告》）
IMF (Global Financial Stability Report)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787504945877（豆瓣书目条目: 全球金融稳定报告）
#银行挤兑 #存款保险 #道德风险
2008年全球金融危机中，“次级抵押贷款→证券化→影子银行”链条是如何放大冲击的？
In the 2008 global financial crisis, how did the chain “subprime mortgages → securitization → shadow banking” amplify the shock?
低利率与房价上涨催生次级贷款激增，银行把房贷打包成MBS/CDO出售以转移风险并回收资金继续放贷；证券化使风险层层叠加，评级被高估，投资者与机构用短期回购融资持有这些证券，杠杆高企。当房价见顶回落、违约率上升，证券价值暴跌，依赖短期融资的影子银行体系遭遇挤兑式去杠杆，被迫抛售资产，价格螺旋下跌；雷曼破产引发对交易对手风险的恐慌，信贷冻结，危机从金融蔓延到实体。监管缺位——低资本要求、表外工具、对评级机构的依赖——是危机放大的制度根源。
Low rates and rising house prices fueled a subprime surge; banks bundled mortgages into MBS/CDOs to offload risk and recycle funds into more lending. Securitization stacked risks and inflated ratings; investors and institutions held these securities funded by short-term repos at high leverage. When prices peaked and fell, defaults rose, securities collapsed, and the shadow-banking system dependent on short funding faced a run-like deleveraging—forced selling created a price spiral. Lehman's failure ignited counterparty panic, credit froze, and the crisis spread from finance to the real economy. Regulatory gaps—low capital requirements, off-balance-sheet vehicles, reliance on credit-rating agencies—were the institutional amplifiers.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
IMF（《全球金融稳定报告》）
IMF (Global Financial Stability Report)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787504945877（豆瓣书目条目: 全球金融稳定报告）
#金融危机 #证券化 #杠杆 #影子银行
中央银行的角色是什么？
What is the role of a central bank?
央行通过设定基准利率、公开市场操作和监管银行体系来调控货币供应与金融稳定，通常在日常政治上保持相对独立。
A central bank manages the money supply and financial stability via policy rates, open-market operations, and banking supervision, usually with operational independence from day-to-day politics.
难度 专业 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#中央银行 #货币政策
汇率由什么决定？
What determines exchange rates?
短期受利率差、资本流动与市场预期影响，长期则趋近购买力平价，即两国物价水平之比。
Short-term rates reflect interest differentials, capital flows, and expectations; long-run rates tend toward purchasing power parity, the ratio of price levels.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#汇率 #购买力平价
什么是数字货币和央行数字货币（CBDC）？
What are digital currencies and central-bank digital currencies (CBDC)?
数字货币是以电子形式存在的货币；CBDC是由央行发行、具有法偿性的数字版本币，不同于去中心化的加密货币。
Digital currency exists only electronically; a CBDC is a central-bank-issued, legal-tender digital form of the national currency, distinct from decentralized crypto assets.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#数字货币 #CBDC
什么是“影子银行”？为什么它既补充又威胁传统银行体系？
What is “shadow banking,” and why does it both complement and threaten the traditional banking system?
影子银行指在传统受监管银行之外从事期限转换、流动性转换和信用中介的机构与活动，如货币市场基金、对冲基金、资产证券化渠道、P2P借贷平台。它们能绕过资本充足率等监管、提供更便宜的融资，使储蓄流向更高风险高收益的渠道，补充信贷供给；但期限错配（用短期资金投长期资产）使其在恐慌时极易遭到挤兑式赎回，风险可能蔓延到正规银行，2008年危机中证券化链条就是导火索之一。
Shadow banking refers to institutions and activities that perform maturity, liquidity, and credit intermediation outside the regulated banking system—money-market funds, hedge funds, securitization conduits, and peer-to-peer lending. They bypass capital-requirement rules, offer cheaper funding, and channel savings into riskier, higher-return uses, complementing credit supply; but maturity mismatch (funding long assets with short money) makes them vulnerable to runs in a panic, and stress can spill over to regulated banks—the securitization chain was a trigger in 2008.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
IMF（《全球金融稳定报告》）
IMF (Global Financial Stability Report)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787504945877（豆瓣书目条目: 全球金融稳定报告）
#影子银行 #期限错配 #金融监管
物价上涨的时候，为什么说“钱不值钱了”？
When prices rise, why do we say "money is worth less"?
货币的价值主要体现在购买力——同样一笔钱能买到多少东西。通货膨胀让同样的钱买到的东西变少，购买力下降，所以“钱不值钱了”。存款和固定工资不会自动跟着物价涨，实际购买力就被悄悄侵蚀，这也是人们关注通胀率、并在通胀高企时设法保值的原因。
Money's value shows mainly in purchasing power, how much a given sum can buy. Inflation makes that same sum buy less, so purchasing power falls and money is worth less. Savings and fixed salaries don't automatically track prices, so real purchasing power is quietly eroded, which is why people watch inflation and look for ways to preserve value when it runs high.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#通货膨胀 #购买力 #储蓄
什么是购买力平价？为什么它能解释部分汇率变动却又常常失效？
What is purchasing power parity, and why does it explain some exchange-rate movements yet often fail?
购买力平价（PPP）认为，同一篮子商品在不同国家的价格经汇率换算后应趋同，因为套利者会在价低处买、价高处卖（一价定律）。长期看，通胀较高国家的货币倾向贬值，这一方向大致成立。但它假定商品可自由交易，而服务业、住房等不可贸易品价格差异大，加上贸易壁垒与运输成本，使汇率在短期内大幅偏离PPP水平。
Purchasing power parity (PPP) holds that the same basket of goods should cost the same across countries once converted at the exchange rate, because arbitrageurs buy low and sell high (the law of one price). Over the long run, high-inflation currencies tend to depreciate, so the direction broadly holds. But PPP assumes goods are freely tradable; services, housing, and other non-tradables differ hugely in price, and trade barriers and transport costs push exchange rates far from PPP in the short run.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
IMF（《金融与发展》·“购买力平价”专题）
IMF (Finance & Development, “Purchasing Power Parity”)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787308076173（豆瓣书目条目: 金融与发展）
#汇率 #购买力平价 #一价定律
通货膨胀对储蓄者有什么影响？
How does inflation affect savers?
物价上涨使固定名义金额的购买力下降；当实际利率（名义利率减去通胀）为负时，会侵蚀储蓄的真实价值。
Rising prices erode the purchasing power of fixed sums; when the real interest rate (nominal minus inflation) is negative, savings lose value.
难度 进阶 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#购买力 #实际利率
“系统性风险”与普通风险有何不同？为什么单家银行的稳健不能保证整个体系的稳健？
How does systemic risk differ from ordinary risk, and why doesn't each bank's soundness guarantee the system's soundness?
普通风险是单个机构的损失风险，可由分散化管理；系统性风险是某机构或市场失灵通过传染链条拖垮整个金融体系的危险。银行间借贷、共同资产持有、支付链和信心外溢使风险相互缠绕——单个银行看似稳健，但若所有银行同时依赖同一类融资或资产，集体上就是脆弱的。危机时，每个机构“抛售资产自保”的理性行为反而压低资产价格、恶化彼此处境。因此宏观审慎监管（压力测试、逆周期资本、杠杆上限）着眼于体系而非单家机构。
Ordinary risk is loss risk at a single institution, manageable through diversification; systemic risk is the danger that one institution's or market's failure topples the whole system through contagion. Interbank lending, common asset holdings, payment chains, and confidence spillovers entangle risks—each bank may look sound, yet if all rely on the same funding or assets, they are collectively fragile. Also, in a crisis each institution rationally selling assets to protect itself pushes prices down and worsens everyone's position. Macroprudential regulation (stress tests, countercyclical capital, leverage limits) therefore targets the system, not individual firms.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
IMF（《全球金融稳定报告》）
IMF (Global Financial Stability Report)
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787504945877（豆瓣书目条目: 全球金融稳定报告）
#系统性风险 #传染 #宏观审慎
通货膨胀是什么?为什么小时候五毛钱的冰棍现在要三块钱?
What is inflation — why did fifty-cent popsicles cost three yuan now?
温和的通胀是经济的常态:货币总量增加、工资物价螺旋上升,钱慢慢变得不那么值钱。适度通胀激励人们消费投资,但恶性通胀(如历史上某些国家物价一年翻百倍)会摧毁经济秩序。你的压岁钱如果一直存着不动,购买力其实在被通胀悄悄稀释——这也是理财教育的第一课:让钱保值增值。
Mild inflation is economic normal: money supply grows, wages and prices spiral gently, cash slowly buys less. Moderate inflation encourages spending and investing, but hyperinflation (prices multiplying hundredfold yearly in some histories) wrecks order. New Year money parked idle quietly loses purchasing power — lesson one of financial literacy: make money hold or grow value.
难度 进阶 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
韩启德总主编《十万个为什么》(第六版),少年儿童出版社,2013
Han Qide chief ed., Ten Thousand Whys, 6th edition, Juvenile and Children Publishing House, 2013, 6th ed., Juvenile and Children Publishing House, 2013
独立核验依据 · Independent verification: 核验依据 1 ISBN 978-7-5324-9328-9 · 核验依据 2 ISBN 9787532493289
#通货膨胀 #购买力 #理财启蒙
利息是什么？
What is interest?
利息是借用资金的成本，或让渡资金使用权的回报，通常按本金的一定百分比计算。
Interest is the cost of borrowing money or the return for lending it, usually expressed as a percentage of the principal.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#利息 #信用
硬币为什么是圆的？
Why are coins round?
圆圆的硬币没有尖角，放进口袋和钱包不会扎到手。它还能轻轻滚动，机器数起来很方便。
Round coins have no sharp corners, so they do not poke your hand in a pocket or purse. They also roll gently, which makes them easy for machines to count.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
Previous citation withdrawn as unsupported for this answer; a specific source is pending.
#硬币 #形状
为什么有些东西一年比一年贵？
Why do some things cost more each year?
生产要用的原料、运费和工资上升时，商品的成本也跟着上去。如果想买的人多、能供应的量少，价格也会被推高。
When raw materials, transport, and wages become more expensive, the cost of making goods rises with them. Prices also get pushed up when many people want something and only a small amount is available.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#物价 #成本
为什么冰淇淋要用钱买？
Why do you need money to buy ice cream?
做冰淇淋要用牛奶、糖和冷柜，还要有人花时间把它做出来。付钱是在感谢这些材料和这份工作。
Making ice cream takes milk, sugar, a freezer, and someone's time to make it. Paying money is a way of thanking people for those things and that work.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-10-04
来源 · Source
Richard Scarry,《What Do People Do All Day》,Random House,1968
R. Scarry, What Do People Do All Day, Random House, 1968
独立核验依据 · Independent verification: 核验依据 1 ISBN 9780898451290 (1968)
#价格 #劳动
存钱罐是做什么用的？
What is a piggy bank for?
存钱罐帮你把零钱一点点攒起来。等里面的钱变多了，你就能买到本来买不起的东西。
A piggy bank helps you gather small coins little by little. When enough coins pile up, you can buy something you could not afford before.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
Previous citation withdrawn as unsupported for this answer; a specific source is pending.
#储蓄 #耐心
为什么用手机付款也算付钱？
Why does paying with a phone still count as paying money?
手机付款时，钱以数字的形式从你的账户转到了商家的账户。虽然看不到纸币，但银行里的记录已经改变了。
When you pay with a phone, money moves as numbers from your account into the shop's account. You see no banknotes, but the records at the bank have already changed.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#电子支付 #账户
银行为什么能创造货币？
How can banks create money?
银行只需保留部分存款作为准备金，将剩余贷出，贷款又会被存入银行，从而通过存贷循环放大货币供给。
Banks keep only a fraction of deposits as reserves and lend the rest; those loans are redeposited, expanding the money supply through the credit cycle.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#货币创造 #部分准备金
把钱存进银行，为什么还能多出利息？
Why does money kept in a bank earn extra interest?
银行把很多人暂时不用的存款借给需要用钱的人和企业，收取一部分费用。银行再把其中一部分分给存款的人，这就是利息。
A bank lends the deposits people are not using right now to those who need money, and charges a fee for it. The bank then shares part of that fee with depositors, and that share is interest.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#银行 #利息
什么是记账和做预算？
What are keeping accounts and making a budget?
记账是把每一笔收入和支出写下来，看清钱到底去了哪里。预算是提前安排好各项要花多少，这样钱就不会在月中就用光。
Keeping accounts means writing down every bit of money coming in and going out, so you can see where it actually went. A budget plans in advance how much goes to each need, so the money does not run out halfway through the month.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
Previous citation withdrawn as unsupported for this answer; a specific source is pending.
#预算 #规划
存钱和马上花掉有什么不同？
What is the difference between saving money and spending it right away?
马上花掉能立刻得到一点快乐，钱也就没有了。存起来虽然要等，却能换到更贵、更想要的东西，遇到急事时也有准备。
Spending right away brings a small pleasure at once, and then the money is gone. Saving means waiting, but it can buy something bigger that you really want and leaves you ready for emergencies.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
Previous citation withdrawn as unsupported for this answer; a specific source is pending.
#储蓄 #选择
什么是交换？
What is trading?
交换就是我把我的东西给你，你把你的东西给我。你有多的蜡笔，我有多的贴纸，换一换两个人都开心。
Trading means I give you something of mine and you give me something of yours. If you have extra crayons and I have extra stickers, swapping makes us both happy.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#交换 #分享
钱是什么？
What is money?
钱是大家一起同意可以用来换东西的小纸片和小圆片。你把钱给店员，店员就把面包给你。
Money is special paper and metal pieces that everyone agrees can be traded for things. You hand money to a shopkeeper, and the shopkeeper gives you bread.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#钱 #交换
为什么二手的东西通常更便宜？
Why are second-hand things usually cheaper?
用过的东西可能有磨损，也不再是最新款，能用的时间通常比全新的短。买家愿意付的钱因此更少，卖家也乐意让它继续被使用而不是丢掉。
Used items may show wear, are no longer the newest model, and usually have a shorter life left than new ones. Buyers are therefore willing to pay less, and sellers are glad to see the item used again instead of thrown away.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#二手 #循环利用
为什么国家之间要互相买卖东西？
Why do countries buy and sell things from each other?
各国的资源和擅长的技术不同，有的地方盛产咖啡，有的地方善于造机器。把自己多的换成自己缺的，双方都能用更低的代价得到需要的东西。
Countries have different resources and different strengths, so one may grow plenty of coffee while another is good at building machines. Trading what you have plenty of for what you lack lets both sides get what they need at a lower cost.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#贸易 #优势
为什么人们要工作才能得到钱？
Why do people have to work to get money?
工作是给别人提供有用的东西或帮助，比如种粮食、修房子、教孩子读书。别人得到了需要的东西，就付钱作为回报。
Working means providing something useful or helpful for others, such as growing food, repairing houses, or teaching children. Because others get what they need, they pay money in return.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-10-04
来源 · Source
Richard Scarry,《What Do People Do All Day》,Random House,1968
R. Scarry, What Do People Do All Day, Random House, 1968
独立核验依据 · Independent verification: 核验依据 1 ISBN 9780898451290 (1968)
#工作 #报酬
为什么不同国家用的钱不一样？
Why do different countries use different money?
每个国家通常自己发行货币，这样更方便管理自己的经济。去别的国家时，可以按当时的比例把手里的钱换成当地货币。
Each country usually issues its own currency, which makes managing its own economy easier. When you travel abroad, you can swap your money for the local currency at the current rate.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#货币 #兑换
纸币上为什么有图画？
Why do banknotes have pictures on them?
纸币上的图画讲的是这个地方的故事，比如有名的建筑、山水或人物。这些很细的花纹也让别人难以仿造。
The pictures on banknotes tell stories about a place, such as famous buildings, mountains, or people. Those very fine patterns also make notes hard to copy.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
Previous citation withdrawn as unsupported for this answer; a specific source is pending.
#纸币 #图案
为什么同一个玩具在不同商店价钱不同？
Why does the same toy cost different amounts in different shops?
每家商店的房租、运费和人工花费都不一样，卖同一件玩具付出的成本就不同。有的店还会故意把价钱定低一点来吸引顾客。
Every shop pays different rent, shipping, and staff costs, so selling the same toy costs them different amounts. Some shops also set a lower price on purpose to attract customers.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#价格 #成本
为什么不能自己在家印钱？
Why can people not print their own money at home?
钱之所以管用，是因为大家相信它数量有限、由国家统一发行。如果谁都能印，钱就会多到没人愿意收，东西的价格也会乱掉。
Money works because everyone trusts that its amount is limited and that a country issues it in one official way. If anyone could print it, there would be so much that nobody would accept it, and prices would fall into chaos.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#货币发行 #信任
保险是怎么起作用的？
How does insurance work?
很多人各交一小笔钱，凑成一个共同的资金池。谁不幸遇到生病、火灾这类意外，就从池子里拿钱来帮他渡过难关。
Many people each pay a small amount into one shared pool of money. If someone is unlucky and faces an accident such as illness or a fire, money from the pool helps them get through it.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 3 条独立证据
来源 · Source
N. Gregory Mankiw,《Principles of Economics》第8版,Cengage,2017;中译《经济学原理》北京大学出版社
N. G. Mankiw, Principles of Economics, 8th ed., Cengage, 2017; Chinese ed. Peking University Press
独立核验依据 · Independent verification: 核验依据 2 cengage.com
#保险 #互助
钱为什么会从手机里付出去?明明没有看到硬币呀?
How does money pay from a phone when I see no coins?
你手机里存的是一串数字账本:付款时,手机告诉银行把我的10元转到商店,银行核对后改两行数字——你的少10,商店的多10。钱没有飞走,只是账本换了页。所以要看管好手机密码,它就是账本的钥匙。
Your phone keeps a digital ledger: paying tells the bank move ten yuan from me to the shop; the bank checks then edits two lines — yours minus ten, theirs plus ten. Money never flies away; only ledger lines change. Guard your password well — it is the ledger key.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
韩启德总主编《十万个为什么》(第六版),少年儿童出版社,2013
Han Qide chief ed., Ten Thousand Whys, 6th edition, Juvenile and Children Publishing House, 2013, 6th ed., Juvenile and Children Publishing House, 2013
独立核验依据 · Independent verification: 核验依据 1 ISBN 978-7-5324-9328-9 · 核验依据 2 ISBN 9787532493289
#移动支付 #银行账本 #密码安全