The idea that the regional water resources and water pollution control system must be regarded as a whole to carry out an integrated planning is proposed.

本文提出在区域范围内将水资源与水污染控制作为一整体进行综合规划。

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The emission control system is required by law to reduce the air pollution the engine could produce.

排放控制系统按法规要求来降低发动机可能产生的空气污染。

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Transaction for pollution control is an indirect market-based system to control environmental pollution.

排污权交易是一种基于市场的环境污染间接控制制度。

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The Beijing News backs a proposal by the capital's mayor to follow the example of the Yangtze River Delta and Pearl River Delta regions and set up a joint air pollution control system between Beijing, Tianjin and Hebei.

BBC: China media: Death of Chavez

By installing pollution control equipment that cut all of its releases that include mercury, it avoided significant legal battles while also improving its system reliability.

FORBES: Coal Plants Belching Out Less Mercury