A blanket of smog is covering large industrial cities.

浓厚的烟雾正在覆盖一些大型的工业城市.

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Tangshan, is a century - old industrial cities along the coast.

唐山, 是一座具有百年历史的沿海重工业城市.

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We have factories producing glass in practically all the industrial cities in our country.

本公司在本国的几乎所有的工业城市里设有工厂生产玻璃.

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Smogbis an unhealthy mixture of smoke and fog in the air of some industrial cities.

是在一些工业城市的空气中烟与雾的混合物,是有害于健康的.

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