Jackson is using a section of the clean Air Act, the New source Performance Standards, to clean up existing sources of carbon pollution.

Jackson在利用《清洁空气法案》的其中一章——“新排放源绩效标准”来清理现有的碳排放源。

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The existing status of formaldehyde pollution in China was introduced and source of formaldehyde pollution was analysed.

介绍了我国目前居室空气中甲醛污染现状，分析了居室空气中甲醛的来源及污染的成因。

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But should he proceed with regulations to control pollution from existing coal-fired power plants, the single largest source of carbon pollution, those regulations probably will contribute to shuttering facilities already struggling to compete with cheap natural gas.

NPR: PROMISES, PROMISES: Climate Change