But the sulphur that spews from the smokestacks of coal-fired power stations causes acid rain and the soot generates smog.

 
  • 但是從火力發(fā)電廠(chǎng)的煙囪里噴出來(lái)的硫導致酸雨,而黑灰產(chǎn)生煙霧。
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