Owing to the abundance of the raw materials, and the full utilization of the abandoned materials, the pollution of river environment is decreased simultaneously with the income being increased.

鉴于原料丰富，又充分利用了废弃物，所以既减少了对江河环境的污染。

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The level of pollution in the river was falling.

该河流受污染的程度其时正在降低。

《柯林斯英汉双解大词典》

The Yangtze River provides one third of the country's freshwater resources, but it has met lots of environmental problems in recent years, such as heavy pollution and overfishing.

长江提供全国三分之一的淡水资源，但它近年来遇到了很多环境问题，如重污染和过度捕鱼。

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David Plunkett Black , BEM (Edinburgh) -For services to the Control of River Pollution in Scotland.

BBC: Famous and not so famous honoured

Occidental Petroleum, for example, is involved in a major human rights and environmental contamination lawsuit regarding the pollution of indigenous land and the Amazon River.

FORBES: Magazine Article

These folk become both victims and perpetrators of the sacred river's pollution.

ECONOMIST: Pilgrimages