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Japan's speed skaters train ahead of their matches on 2018 PyeongChang Winter Olympic Games at Gangneung Oval, South Korea, Feb. 7, 2018. (Xinhua/Ju Huanzong)
Japan's speed skaters train ahead of their matches on 2018 PyeongChang Winter Olympic Games at Gangneung Oval, South Korea, Feb. 7, 2018. (Xinhua/Ju Huanzong)