People, however, may differ in what they consider to be a pollutant, on the basis of their assessment of benefits and risks to their health and economic well-being.

基于环境污染对人类健康和生活所带来的利弊的不同估计，人们对同一污染源持有不同的看法。

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People, however, may differ in what they consider to be a pollutant , on the basis of their assessment of benefits and risks to their health and economic well-being.

基于环境污染对人类健康和生活所带来的利弊的不同估计，人们对同一污染源持有不同的看法。

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The plan of total quantity control of pollutant discharge is being carried out in our country at present.

目前，我国正大力推行排放污染物总量控制计划。

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Diversa, a California biotech, has isolated an enzyme from a volcanic crater in Russia that is now being used to help whiten paper, reducing the need for chlorine dioxide, an environmental pollutant.

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