because the most polluted city in the world.你这句话不完整 我翻译的意思是 “由于世界上污染最严重的城市的原因” 不知道对吗 有问题请追问 O(∩_∩)O~
The world`s most polluted cities in the cause.
the reason of the world's most polluted cities
the reason of being the most polluted city in the world
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