And there are particular fears that, even if the system works well enough overall, states that rely heavily on coal, heavy industry or some other sooty activity will suffer badly.

此外还有一个特别的忧虑：就算总量控制与交易体系总体上运行良好，那些经济很大程度依赖煤炭、重工业和其他污染行为的州也会遭受严重打击。

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Using new technology, clean coal plants sharply reduced the number of sooty particles spewed into the air, as well as gases like sulfur dioxide and nitrous oxide.

使用新技术，清洁煤电厂大大减少了煤烟粒子散发到大气中的数量，以及像二氧化硫和一氧化氮等气体。

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First, it does little to incentivise the development of CCS, which will be needed if emissions from existing coal plants, both in America and in sooty places such as China and India, are ever to be reduced.

ECONOMIST: New rules look set to speed the move from coal to natural gas