In reaction to the phenomenon, some people called for raising the air pollution tax.

为了应对这一现象，有人要求增加空气污染税。

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A "pure" effluent charge system requires payment of a fee or tax on each unit of pollution released into the air or water.

“纯粹”排污收费制度要求付款和缴税，按照释放到空气或者水中污染物的量缴纳。

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In 2001, for example, he signed bills that raised the sales tax on fireworks and even signed an air pollution tax on the purchase or rental of diesel equipment.

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The research team used data from a number of sources including air pollution reports, traffic counts and tax offices.

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