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Photo taken on Dec. 6, 2017 shows a view of Los Angeles City in heavy smog. Smog caused by massive wildfire enveloped the city on Wednesday. (Xinhua/Li Ying)
Photo taken on Dec. 6, 2017 shows a view of Los Angeles City in heavy smog. Smog caused by massive wildfire enveloped the city on Wednesday. (Xinhua/Li Ying)