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Athletes compete during Men's 4X50m Freestyle Relay Final at 14th FINA World Swimming Championships (25m) in Hangzhou, east China's Zhejiang Province on Dec. 14, 2018. (Xinhua/Huang Zongzhi)
Athletes compete during Men's 4X50m Freestyle Relay Final at 14th FINA World Swimming Championships (25m) in Hangzhou, east China's Zhejiang Province on Dec. 14, 2018. (Xinhua/Huang Zongzhi)