drinking water饮用水 Water body 水体 Contaminate 污染 Rhine 莱茵河 Greenhouse effect温室效应 Ground level ozone地面臭氧 particulate matter微粒物质 biological materials生物材料 respiratory disease呼吸疾病 stationary sources固nts 水俣病事件 （19531956）Japan bone pain disease events 骨痛病事件（） 1955-1963）Japan poisonous substances contaminate the Rhine events剧毒物质污染莱茵河事件 1986 Switzerland, Germany, France


Water pollution occurs when a body of water is adversely affected due to the addition of large amounts of materials to the water. 水污染是水体中添加大量其他物质而造成 的负面影响
Air Pollution
Pollutants

Pollutants can be classified as either primary or secondary.
Primary pollutants: emitted from a process. such as: ash from a volcanic eruption; the carbon monoxide gas from a motor vehicle exhaust ; sulfur dioxide released from factories.
Secondary pollutants: not emitted directly, they are produced when primary pollutants react or interact. An important example of a secondary pollutants is ground level ozone, it is one of the many secondary pollutants that make up photochemical smog.
Drought Pollution
Approximately 300 million nationwide have no access to clean water. Furthermore, over 700 million Chinese drink fetid water below World Health Organization standards. Almost 90% of underground water in cities is affected by pollution and 80% of China’s rivers fail to meet standards for fishing. Almost all of the nation's rivers are considered polluted to some degree and half of the population lacks access to clean drinking water. Ninety percent of urban water bodies are severely polluted.
全国约有3亿人使用不上干净的水，此外，有超过7亿中国 人饮用的水没能达到世界卫生组织的标准，几乎 90%的城 市地下水受到污染，80%的中国河流不符合捕鱼标准，某种 程度上说，几乎所有的河流都受到某种程度的污染，一半 的人口缺少干净的饮用水，90%的城市水体受到严重污染。
The famous water pollution incidents
Our Country’s Environmental Problems
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Ecological environment 生态环境 Desertification 荒漠化 Salinization 盐碱化 Offscum 废渣 Mining 采矿业 Biological chain 生物链 Biodiversity 生物多样性 Wastewater 污水 World Health Organization 世界卫生组织 underground water 地下水
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Waste Pollution
WATER POLLUTION
The four basic natural resources are water, air, land and energy. We need water for multiple uses and a certain quality is required. Its use leads to the generation of wastewater that can cause an impact on the environment. 水 ，空气，土地和能源是四个基本的自然资源。 水的用途多种多样，而且要求其达到一定的标准。 但是，由于人类使用而产生的污水造成了对环境的 影响。
Focal 焦点的 Quota 定额 global warming全球变暖 Coordinate使协调 gaseous system气态系统 Emission 发射 ozone depletion 臭氧枯竭 Afforestation 造林 Ecosystem生态系统 Adsorption 吸附 Pollutants污染物 Photosynthesis 光合作用 photochemical smog光化雾 Phosphorus 磷 Countermeasure措施 Filtration 过滤 Propaganda 宣传 Biodegradable 能被细菌分解的 Ascendant 优势 Trash 垃圾 Detergent 洗涤剂 Consumption 消耗 Evaporative蒸发的 Rectification 改正