The mercury is a poisonous pollutant to environment.
汞是一种剧毒环境污染物。
And if that wasn t bad enough NOx is a poisonous pollutant that it takes a lot of effort to remove.
而且，比这更糟的是，氮氧化物属于一种有毒的污染物，清除它需要付出很高的成本。
Terephthalic acid is a common organic pollutant which is poisonous and toxic to organism to some extent.
对苯二甲酸是常见的、对生物具有一定毒害性的有机污染物。
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