机动车尾气污染 机动车尾气排放
Motor vehicle exhaust pollution: Motor vehicle exhaust emissions
以上为机器翻译结果，长、整句建议使用 人工翻译 。
随着我国国民摩托车保有量的不断增长，摩托车尾气排放污染已成为城市机动车排气污染的一个不容忽视的部分。
As the motorcycle amount increases continuously, the tail gas pollution of motorcycle becomes a non-negligible part of the tail gas pollution from city vehicles.
机动车尾气排放不断增加以及城市通风能力降低，常导致城市街谷内的空气污染。
High pollution levels often occurred in urban street canyon due to the increased traffic emissions and reduced natural ventilation.
净化城市的大气环境，降低机动车尾气的排放污染是时代赋予的重任。
It is our important duty to decrease vehicles exhausting pollution and purify atmosphere.
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