空气被令人窒息的车辆废气和工业烟雾污染了。
The air is polluted with the smother of traffic and industrial smog.
不过，伦敦大学国王学院环境研究主任弗兰克·凯利说，这种烟雾并不像大多数城市看到的工业烟雾那么危险。
However, Frank Kelly, director of environmental research at King's College London, says the smoke isn't as dangerous as the industrial smog seen in most cities.
刺激性支气管炎；刺激性支气管炎(又称工业或环境性支气管炎)是由接触各种矿石，蔬菜粉尘，香烟和烟雾。
Irritative bronchitis: Irritative bronchitis (also called industrial or environmental bronchitis) may be caused by exposure to various mineral and vegetable dusts as well as cigarette smoke and smog.
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