exhaust
/ɪgˈzɔst/
gases ejected from an engine as waste products
Chinese meaning: 废气；尾气
Car exhaust contains harmful pollutants that contribute to air pollution.
汽车尾气含有有害污染物，加剧空气污染。
The exhaust from factories must be filtered before release.
工厂废气在排放前必须经过过滤。