The organic pollution is an obvious feature of lake pollution.

有机污染是近年来“三湖”污染的一个显著特征。

youdao

Correct Raw Water Quality Evaluation of lake Chaohu can provide scientific evidence for the lake pollution prevention.

准确评价巢湖原水水质等级，可为防治巢湖水污染提供科学依据。

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From systematical point of view, analysis is made on the formation, structure of lakes and the reason of lake pollution.

从系统的角度，对湖泊的组成、结构，湖泊污染形成的原因进行了分析。

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Lake Champlain also has the same kinds of environmental problems, including pollution and nonnative sea life, as the Great Lakes.

VOA: special.2009.01.05

Houseboats also contribute to the lake's pollution and the development authority says they should install small sewage systems.

VOA: standard.2009.12.16

We can confirm that there is currently no pollution to the lake.

BBC: Row over Maiden Erlegh Lake sewage leak

The air pollution is so awful in her Salt Lake City suburb that Francis keeps her daughter indoors on many days to prevent her cough from being aggravated.

NPR: Sickening Fog Settles Over Salt Lake City Area