1·At the turn of the century battery-powered vehicles were a common sight on city streets, because they were quiet and did not emit any noxious fumes.
在上世纪之交，电池驱动的汽车成为城市里的街道一景，因为它们行驶安静而且不排放有毒烟气。
2·Kitchen fumes main consists of cook smoke and the burning production of fuels, both of which are harm to human health.
厨房烟气主要由烹调油烟和燃料燃烧产物组成，两者都对人体健康产生极大的危害。
3·As with regular clays, the fumes are not toxic unless the LS burns.
与常规陶泥一样，烘焙时的烟气是无毒的，除非燃烧起来。
4·The field of air pollution control includes indoor air purification, fumes desulfurization and control of automobile tail gas.
在气体污染防治方面主要为：室内空气污染、烟气脱硫、汽车尾气处理。
5·Treatment of boiler fumes is more difficult, application of water membrane duster has improved it.
锅炉烟气在治理上有一定的难度，文丘里水膜除尘技术的应用取得了一些进展。