... 卫生防疫hygiene and disease control 污染扩散dispersal of pollution 污染源pollution source ...
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We will prohibit the relocation of urban polluting enterprises and dispersal of urban polluting materials in the countryside, and control non-point source pollution in rural areas.
禁止污染企业和城市污染物向农村扩散，控制农村面源污染。
In 1968 its amendment ordered industries burning coal, gas or other fuels to use tall chimneys. The higher the chimney, the better the dispersal of the air pollution.
1968年，《清洁空气法》修正案要求烧煤和天然气等其他燃料的工厂必须使用高烟囱。烟囱建得越高，空气污染就能更快地驱散。
The nature of such problems has changed: intense local smoke pollution has been largely reduced, whilst total emissions of pollutants and their dispersal over long distances have increased.
这个同题的性质也发生了变化：剧烈的局部烟雾污染已大为下降，而污染物的总量以及扩散距离却增加了。
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