地下水被抽上来有什么后果？为什么说它“一退难回”？
What happens when groundwater is over-pumped, and why is it hard to recover?
地下水的补给靠降水缓慢渗透，抽取速度常常远超补给，导致水位持续下降，进而引发地面沉降、海水入侵和泉河断流。地下水污染后几乎无法在合理时间内自净。华北地区通过跨流域调水、节水灌溉和回补工程，地下水水位已在回升，说明只要科学管理，地下水资源是可以修复的。
Groundwater is recharged only by slow rainfall infiltration, yet pumping often outpaces it, so water tables fall steadily, triggering land subsidence, saltwater intrusion and drying springs. Once polluted, groundwater cannot clean itself within any reasonable time. In the North China Plain, inter-basin water transfer, water-saving irrigation and recharge projects have brought water levels back up — proof that with sound management, groundwater can recover.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
中国生态环境部（地下水保护）；WRI
MEE (groundwater protection); WRI
#地下水 #超采 #地面沉降
什么是“虚拟水”和“水足迹”？
What are virtual water and water footprint?
虚拟水是生产一件商品（如1公斤牛肉、一件棉衣）在整个供应链中消耗的水；水足迹是个人或产品在整个生命周期用掉的总水量，含看不见的虚拟水。
Virtual water is the water used across the supply chain to make a product (e.g., 1 kg beef); water footprint is the total water used by a person or product, including hidden virtual water.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
G. Tyler Miller,《Living in the Environment》Cengage 多版
G. T. Miller, Living in the Environment, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#虚拟水 #水足迹 #供应链
“蓝水、绿水、灰水”分别指什么？
What do blue, green and grey water mean?
蓝水是河流湖泊和地下水等可见的地表与地下淡水；绿水是降水中被植物吸收和蒸散的土壤水；灰水是稀释污染物所需的水量，代表水质代价。
Blue water is visible surface and groundwater; green water is rainfall stored in soil and used by plants; grey water is the volume needed to dilute pollution, representing water-quality cost.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
G. Tyler Miller,《Living in the Environment》Cengage 多版
G. T. Miller, Living in the Environment, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#蓝水 #绿水 #灰水
什么是“虚拟水”？为什么说一杯咖啡背后“藏”着两百多升水？
What is virtual water, and why does a cup of coffee hide more than 200 litres of water?
虚拟水指生产商品和服务所需的水量，例如一杯咖啡从种植、加工到运输总共耗水约200升。缺水地区可以通过进口水密集型产品（如谷物、棉花）缓解本地水压力，这就是虚拟水贸易。理解虚拟水，能帮我们看清消费模式与全球水资源的深层联系。
Virtual water is the water embedded in producing a good or service — a cup of coffee, for instance, consumes about 200 litres once growing, processing and transport are counted. Water-scarce regions can relieve local pressure by importing water-intensive goods such as grain or cotton — virtual water trade. Grasping virtual water reveals how our consumption is connected to global water resources.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#虚拟水 #水足迹 #水贸易
为什么湿地能防洪？
Why do wetlands prevent floods?
湿地像海绵一样蓄水，减缓洪峰下泄。
Wetlands store water like sponges, easing flood peaks.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
G. Tyler Miller,《Living in the Environment》Cengage 多版
G. T. Miller, Living in the Environment, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#蓄洪 #海绵 #水文
有机农业为什么通常土壤更健康？它的局限又在哪里？
Why is organic farming usually better for soil, and where are its limits?
有机农业不用合成农药化肥，靠轮作、绿肥和生物防治维持地力、控制病虫害，土壤有机质和田间生物多样性往往更高，也能减少化肥流失造成的水污染。但有机作物的单位面积产量通常低于常规农业，需要更多土地，因此评价它的整体环境效益时，要把产量也算进来综合比较。
Organic farming forgoes synthetic pesticides and fertilisers, relying on crop rotation, green manures and biological control to maintain fertility and manage pests, so its soils usually hold more organic matter and its fields more biodiversity, while nutrient runoff pollution drops. But yields per hectare are generally lower than in conventional farming, needing more land — so judging its overall environmental impact requires comparing on a per-tonne basis.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
Nature（农业生态研究）；WRI
Nature (agroecology research); WRI
#有机农业 #土壤健康 #生物多样性
什么是“海水淡化”，有什么代价？
What is desalination and what does it cost?
海水淡化是用反渗透或蒸馏把海水变淡水，能缓解缺水，但耗电高、成本高，并会产生浓盐水排放影响海洋。
Desalination removes salt from seawater via reverse osmosis or distillation; it eases shortages but is energy-intensive, costly and produces brine harmful to marine life.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
G. Tyler Miller,《Living in the Environment》Cengage 多版
G. T. Miller, Living in the Environment, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#海水淡化 #反渗透 #浓盐水
什么是“可持续渔业”？为什么不能有多少捞多少？
What is a sustainable fishery, and why can we not just catch as many fish as possible?
可持续渔业要求捕捞量不超过鱼类种群自然再生的速度，通常用最大可持续产量作参考。过度捕捞会让种群崩溃，全球有相当比例的鱼类资源已处于过度开发或枯竭状态。配额管理、禁渔期和海洋保护区让鱼群有时间恢复，长期看反而能让渔民捕得更多、更稳。
A sustainable fishery harvests no faster than the fish population can naturally replenish, typically guided by the Maximum Sustainable Yield. Overfishing pushes stocks to collapse — a large share of the world's fish stocks are already overexploited or depleted. Quotas, closed seasons and marine protected areas give stocks time to rebuild, which in the long run lets fishers catch more, more reliably.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#可持续渔业 #捕捞配额 #海洋保护区
什么是“水华”（藻华）？
What is an algal bloom?
水华是水体中藻类在温暖、富营养条件下暴发性繁殖，常使水面变绿或发臭，有些还会释放毒素危害鱼虾和人畜。
An algal bloom is the explosive growth of algae in warm, nutrient-rich water, often turning surfaces green and sometimes releasing toxins harmful to fish, livestock and people.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
G. Tyler Miller,《Living in the Environment》Cengage 多版
G. T. Miller, Living in the Environment, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#水华 #藻华 #毒素
浪费粮食和气候变化有什么关系？
What does wasting food have to do with climate change?
全球大约三分之一的粮食被损失或浪费，而生产这些粮食占用了巨量的土地、水和能源。如果把食物浪费算作一个国家，它的温室气体排放仅次于中国和美国。减少损失浪费，相当于同时缓解气候变化、水资源压力和粮食安全风险，被视为性价比最高的“三赢”行动。
Roughly one-third of all food produced is lost or wasted, and making it consumed vast amounts of land, water and energy. If food waste were a country, its greenhouse emissions would rank behind only those of China and the United States. Cutting loss and waste relieves climate pressure, water stress and food insecurity at once — widely seen as one of the highest-value win-win-win actions.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#粮食浪费 #食物损失 #气候
什么是“流域”（河流流域）？
What is a river basin (watershed)?
流域是分水岭以内所有雨水汇聚到同一条河流及其支流的完整区域，上游污染会顺流影响下游，因此要整体保护。
A basin is the whole area where rainwater drains into one river system; upstream pollution flows downstream, so the basin must be protected as a whole.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
G. Tyler Miller,《Living in the Environment》Cengage 多版
G. T. Miller, Living in the Environment, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#流域 #分水岭 #整体治理
为什么过度开采地下水会导致地面沉降？
Why does over-pumping groundwater cause land subsidence?
抽走地下含水层的水后，砂土孔隙失去支撑被压密，地面就会缓慢下沉，且往往不可逆，还会加重沿海洪涝。
Removing aquifer water compacts the soil as pore spaces collapse, slowly and often irreversibly sinking the land and worsening coastal flooding.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
G. Tyler Miller,《Living in the Environment》Cengage 多版
G. T. Miller, Living in the Environment, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#地下水 #沉降 #含水层
滴灌为什么能比大水漫灌省这么多水？
Why does drip irrigation save so much water compared with flood irrigation?
滴灌通过管网把水一滴一滴送到作物根部附近，只湿润根系区，大大减少蒸发、渗漏和地表径流，比漫灌节水约30%到60%，还能减少盐分在表土积累。配合覆膜和土壤湿度传感器，实现按需供水。在干旱地区，滴灌是让农业活下去的关键技术之一。
Drip irrigation delivers water drop by drop to the root zone through a pipe network, wetting only where roots grow and slashing evaporation, seepage and runoff — saving roughly 30 to 60 percent compared with flood irrigation, while also reducing salt build-up. Paired with mulching and soil-moisture sensors, it waters crops on demand. In arid regions, drip irrigation is one of the technologies that keep agriculture alive.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
中国科学院（节水农业研究）；WRI
CAS (water-saving agriculture); WRI
#滴灌 #节水农业 #水资源
“虚拟水”和“水足迹”是什么，为什么跨国贸易会转移水压力？
What are 'virtual water' and 'water footprint', and why does trade shift water stress?
产品在生产地消耗的水叫虚拟水，水足迹衡量总量；缺水国进口高耗水农产品等于“进口水”，把本地水压力转嫁给出口国，重塑全球水账本。
Water consumed where a product is made is 'virtual water'; the water footprint measures the total. Water-scarce importers of thirsty crops 'import water', shifting local stress to exporters and reshaping the global water ledger.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
G. Tyler Miller,《Living in the Environment》Cengage 多版
G. T. Miller, Living in the Environment, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#虚拟水 #水足迹 #贸易
为什么小螃蟹喜欢在沙滩和礁石边生活？
Why do little crabs like living by the beach and rocks?
沙滩和礁石边藏着小贝壳、小虫和海藻，都是螃蟹爱吃的零食。涨潮时海水带来食物，退潮时它们就躲在石头缝里不被干到。
The sand and rocks hide little shells, bugs, and seaweed that crabs love to snack on. When the tide comes in it brings food, and when it goes out the crabs hide in cracks so they don't dry out.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
G. Tyler Miller,《Living in the Environment》Cengage 多版
G. T. Miller, Living in the Environment, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#螃蟹 #海滩 #潮间带
为什么我们要节约用水？
Why should we save water?
干净的水并不是取之不尽的，许多地方的人要走上很久才能打到一桶水。我们随手关紧水龙头、用盆洗菜，就能把更多清水留给需要和地球。
Clean water is not endless, and in many places people walk a long way just to fetch one bucket. By turning off the tap tightly and washing veggies in a basin, we save more fresh water for others and the Earth.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#节约 #淡水 #地球
为什么北方的湖面冬天会结冰？
Why do lakes in the north freeze on top in winter?
当气温降到零度以下，湖面最上层的冷水会先结成一薄层冰。有趣的是冰比水轻，会浮在上面，像被子一样盖住湖水，保护下面的小鱼不被冻僵。
When the temperature drops below freezing, the top layer of cold lake water freezes into a thin sheet of ice. Fun fact: ice is lighter than water, so it floats on top like a blanket that protects the fish below from freezing.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
G. Tyler Miller,《Living in the Environment》Cengage 多版
G. T. Miller, Living in the Environment, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#湖泊 #结冰 #冬天
为什么雨后的小水坑会自己消失？
Why do little puddles disappear after the rain?
雨停后，太阳把水坑晒暖，水面变成看不见的小水汽飞到空气里。风一吹，水坑就慢慢变小，最后干干爽爽了。
After the rain stops, the sun warms the puddle and turns its surface into invisible vapor that floats into the air. With a little breeze, the puddle shrinks and finally dries up.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
G. Tyler Miller,《Living in the Environment》Cengage 多版
G. T. Miller, Living in the Environment, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#水坑 #蒸发 #太阳
什么是“湿地”，为什么被称为“地球之肾”？
What is a wetland and why is it called Earth's kidney?
湿地是常年或季节积水、长着芦苇等植物的低地，能像肾一样过滤泥沙和污染物、储存洪水、为大量生物提供家园。
Wetlands are seasonally flooded lowlands with reeds and similar plants; like kidneys they filter sediment and pollutants, store floodwater and host rich life.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
G. Tyler Miller,《Living in the Environment》Cengage 多版
G. T. Miller, Living in the Environment, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#湿地 #过滤 #蓄洪
为什么海水是咸咸的？
Why does seawater taste salty?
雨水落在山上，把岩石里一点点盐和矿物冲进小河，再流进大海。海水被太阳晒得蒸发，盐却留了下来，积了很久很久，海就变咸了。
Rain falls on mountains and washes a little salt and minerals from rocks into streams that flow to the sea. The sun evaporates the water but leaves the salt behind, and over a very long time the ocean became salty.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#海水 #盐 #海洋
为什么鱼儿需要干净的水才能活得好？
Why do fish need clean water to live well?
鱼用鳃从水里吸取氧气，如果水里有太多垃圾和药水，氧气会变少、还会伤害鱼的身体。干净、流动的水里住着小虫和水草，正好是小鱼的美食和躲藏处。
Fish use their gills to take oxygen from water, so too much trash and chemicals make oxygen drop and harm their bodies. Clean, flowing water holds little bugs and plants that are perfect food and hiding spots for fish.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#鱼 #水质 #河流
为什么海水每天会涨上来又退下去？
Why does the sea rise and fall every day?
月亮和太阳用引力轻轻拉着地球上海的水，把海水推向它们那边，就形成了涨潮。当拉力变小，海水又退回去，这就是退潮，一天里通常会出现两次。
The Moon and the Sun gently pull on Earth's seawater with gravity, drawing the water toward them and creating high tide. When the pull eases, the water flows back out, which is low tide — and this usually happens twice a day.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#潮汐 #月亮 #海洋
为什么海洋对我们整个世界都很重要？
Why is the ocean important to our whole world?
海洋覆盖了地球大约七成的表面，制造了我们通过呼吸用到的大部分氧气。它还像地球的空调，吸收太阳的热量，让各地的天气不会太极端。
The ocean covers about seventy percent of Earth's surface and makes most of the oxygen we breathe. It also acts like Earth's air conditioner, soaking up the sun's heat so the weather stays less extreme.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#海洋 #氧气 #气候
为什么河流对我们很重要？
Why are rivers important to us?
河流把山上的清水一路送到田野和城市，给我们喝水、洗澡和种庄稼。河边的水草和浅滩，也是水鸟、鱼儿和青蛙热闹的家。
Rivers carry fresh water from the mountains all the way to fields and cities, giving us water to drink, wash, and grow crops. The grasses and shallows along the banks are also busy homes for waterbirds, fish, and frogs.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#河流 #淡水 #生命
为什么我们不能把水龙头一直开着？
Why shouldn't we leave the tap running?
地球上的淡水很少很少，开着水龙头会白白流走，省下水就能留给植物、小鱼和以后的人用。
Fresh water on Earth is very scarce; a running tap wastes it, and saving water leaves more for plants, fish and future people.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
G. Tyler Miller,《Living in the Environment》Cengage 多版
G. T. Miller, Living in the Environment, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#节约用水 #淡水 #珍惜
为什么大海总是一浪接一浪？
Why does the sea always have one wave after another?
风轻轻吹过海面，把海水推起一道道小波浪。波浪你追我赶地涌向岸边，就变成了我们在沙滩上看到的一层层白浪花。
The wind gently blows across the sea and pushes the water into little waves. The waves chase each other to the shore and become the white foam we see on the beach.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
G. Tyler Miller,《Living in the Environment》Cengage 多版
G. T. Miller, Living in the Environment, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#海浪 #风 #海洋
为什么河流会把泥土带到远方？
Why do rivers carry soil to faraway places?
河水流动时会轻轻冲刷河岸，把细小的泥沙卷进水流里带走。这些肥沃的泥土流到平原，能让农田变得更松软、更养庄稼。
As river water flows, it gently wears the banks and sweeps fine soil into the current. This fertile mud travels to the plains and makes farmland looser and better for crops.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
G. Tyler Miller,《Living in the Environment》Cengage 多版
G. T. Miller, Living in the Environment, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#河流 #泥土 #农田
为什么湿地能把水变干净？
Why can wetlands make water clean?
水流进湿地时变慢，泥沙沉到水底，植物还能吸走脏东西，让水变清亮。
When water flows into a wetland it slows down, mud settles, and plants soak up dirt, leaving the water clearer.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#湿地 #净水 #植物
为什么红树林能保护海岸？
Why do mangrove forests protect the coast?
红树林长在海水边缘，密密的根像手指一样插进泥里，能挡住海浪、留住泥沙。它们还是小鱼小蟹的育儿房，台风来时也能减轻对村庄的冲击。
Mangroves grow at the edge of the sea, and their dense roots plunge into the mud like fingers, blocking waves and holding the soil. They are nurseries for little fish and crabs, and soften the blow of storms on nearby villages.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
G. Tyler Miller,《Living in the Environment》Cengage 多版
G. T. Miller, Living in the Environment, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#红树林 #海岸 #保护
为什么我们每天都要喝水？
Why do we need to drink water every day?
我们的身体大半都是水，喝水能帮助运送营养、把废物排出去。出汗和尿尿会带走水分，所以每天都要补回来。
Most of our body is water, and drinking helps carry nutrients around and wash waste out. We lose water when we sweat and pee, so we need to refill every day.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#喝水 #身体 #健康
为什么巨大的冰山能浮在海面上？
Why can giant icebergs float on the sea?
冰是水变成的，但水结冰时分子会排成疏松的晶体格子，让冰比液态水轻。一大块冰从冰川掉进海里，就会像软木塞一样稳稳地浮在水面上。
Ice is made of water, but when water freezes its molecules form a loose crystal lattice that makes ice lighter than liquid water. When a big chunk breaks from a glacier into the sea, it floats steadily like a cork.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#冰山 #浮力 #海洋
什么是“水循环”？
What is the water cycle?
太阳晒热海洋和湖泊，水变成水蒸气升上天空成云，再落为雨或雪回到地面，流入河流海洋，如此不断循环。
The sun evaporates water into vapor that forms clouds and falls as rain or snow, returning to rivers and oceans—a continuous cycle.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
G. Tyler Miller,《Living in the Environment》Cengage 多版
G. T. Miller, Living in the Environment, Cengage Learning, various editions
独立核验依据 · Independent verification: 核验依据 2 OPENLIBRARY 标识 /works/OL66394W：Living in the environment
#水循环 #蒸发 #降水