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A policeman patrols with a dog at Times Square in New York, the United States, on Dec. 31, 2017. Security measures are tightened for the upcoming New Year celebration. (Xinhua/Wang Ying)
A policeman patrols with a dog at Times Square in New York, the United States, on Dec. 31, 2017. Security measures are tightened for the upcoming New Year celebration. (Xinhua/Wang Ying)