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Athletes compete during the men's 50km race walk at the 2019 IAAF World Championships in Doha, Qatar, Sept. 29, 2019. (Xinhua/Jia Yuchen)
Athletes compete during the men's 50km race walk at the 2019 IAAF World Championships in Doha, Qatar, Sept. 29, 2019. (Xinhua/Jia Yuchen)