pollutant
noun [ C ] uk/pəˈluː.tənt/ us/pəˈluː.t̬ənt/
污染物,污染物质
a substance that pollutes
Sulphur dioxide is one of several pollutants that are released into the atmosphere by coal-fired power stations. 二氧化硫是火力发电站排放到大气中的若干污染物之一。
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