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smogHsmBg, $smB:gna type of air pollution in some large cities that is caused either by smoke from burning wood and coal mixing with water in the air to produce a type of dirty fog or by chemicals produced by road vehicles reacting with bright light from the sun烟雾(由烟和雾混合而成的空气污染)Smog is a major problem in Los Angeles. [U]烟雾是洛杉矶的一大问题。Such high levels of smog would not normally be expected in a coastal city, where sea breezes should help to disperse it. [U]海岸城市一般不会出现如此高的烟雾浓度, 因为海风能够驱散烟雾。As we flew into the airport, we could see a murky yellow smog hovering over the city. [C]当我们飞进机场的时候, 我们看见朦胧黄雾弥漫在城市的上空。
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