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Maddy Gough of Australia competes during the women's 400m freestyle final at the FINA Swimming World Cup in Singapore on Aug. 15, 2019. (Xinhua/Then Chih Wey)

Maddy Gough of Australia competes during the women's 400m freestyle final at the FINA Swimming World Cup in Singapore on Aug. 15, 2019. (Xinhua/Then Chih Wey)