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Japan's Hirooki Arai (L) and Satoshi Mauro compete during the men's 50km competition at the IAAF World Race Walking Team Championships Taicang 2018 in Taicang, east China's Jiangsu Province, May 5, 2018.(Xinhua/Ji Chunpeng)
Japan's Hirooki Arai (L) and Satoshi Mauro compete during the men's 50km competition at the IAAF World Race Walking Team Championships Taicang 2018 in Taicang, east China's Jiangsu Province, May 5, 2018.(Xinhua/Ji Chunpeng)