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Chad Le Clos of South Africa competes during Men's 100m Butterfly semifinal at 14th FINA World Swimming Championships (25m) in Hangzhou, east China's Zhejiang Province, on Dec. 12, 2018. (Xinhua/Weng Xinyang)
Chad Le Clos of South Africa competes during Men's 100m Butterfly semifinal at 14th FINA World Swimming Championships (25m) in Hangzhou, east China's Zhejiang Province, on Dec. 12, 2018. (Xinhua/Weng Xinyang)