Our atmospheric environment quality is worrying. Soot and car exhaust are the main issues needing to be immediately solved.

我国城市大气环境质量不容乐观，特别是煤烟加汽车尾气复合型污染是当前急待解决的问题。

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The atmospheric problems lying ahead of mankind and demanding prompt solution: destroy of ozonosphere, greenhouse effect, acid rain and automobile exhaust pollution were summarized in this paper.

综述了人类面临亟待解决的大气污染问题：臭氧层破坏，温室效应，酸雨和汽车尾气污染。

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Exhaust from the engine consists of harmless atmospheric air, cold enough to serve as air-conditioning on a hot day.

FORBES: Driving on Air