Chinese government is poised to conduct its first national survey of pollution sources in February to help control environmental deterioration in the country.

中国政府准备在2月份进行首次全国污染源调查，以帮助控制环境恶化。

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As a result, to control water eutrophication of these lakes, it is not most urgent to control nitrogen deposition but to control the other sources of nitrogen pollution mentioned above.

因此，对控制这些湖泊的水质富营养化而言，控制氮沉降并不是目前最紧迫的任务，而其它人为污染源的控制才是最急需的。

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The reclamation and recycle of polystyrene foamed plastic waste not only can control pollution but also solve the problems of chemical energy sources.

将废弃的聚苯乙烯泡沫塑料回收利用既可解决它所带来的污染，又可缓解化工能源不足问题。

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Northumbrian Water said it was confident the steps would improve the bathing water, but added there were sources of pollution beyond its control.

BBC: Northumbrian Water to put ?6m into Saltburn water works