城市雾是城市气候的主要特征之一，也是最有害的现象之一。城市雾的分布，以市中心区和工业区为最多，且有随着城市规模的不断扩大而增加的趋势。
伦敦是一个多雾的城市 london is a foggy city
开幕仪式在一个闷热的早晨进行，村内街区的旗帜被因污染而产生的城市雾霾所笼罩。
The ceremony took place on a muggy morning, with the village's blocks of flats shrouded in a pollution haze.
开幕仪式在一个闷热的早晨进行，村内街区的旗帜被因污染而产生的城市雾霾所笼罩。 。
Thee ceremony took place on a muggy morning, with the village's blocks offlats shrouded in a pollution haze.
化石能源的不完全燃烧会释放微尘，造成城市雾，这会引起很多呼吸系统疾病，比如哮喘。
And the particles released by the incomplete burning of fossil fuels give rise to urban smog, which cause many respiratory diseases, for instance, asthma.
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