
Sarah Sjostrom of Sweden celebrates after winning the women's 50m butterfly swimming final at the 17th FINA Aquatics World Championships held in Budapest, Hungary on July 29, 2017. (Xinhua/Ding Xu)

Sarah Sjostrom of Sweden celebrates after winning the women's 50m butterfly swimming final at the 17th FINA Aquatics World Championships held in Budapest, Hungary on July 29, 2017. (Xinhua/Ding Xu)