Beijing was blanketed in a thick, foul-smelling layer of hazardous smog over the weekend that pushed air quality readings well off the charts and prompted environmentalists to call it the worst air pollution on record in the city.
一层浓密、难闻的有害雾霾周末笼罩着北京，空气质量达到超常的恶劣程度，促使环保人士称其为该市有史以来最严重的空气污染。
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