
Gold medalist Sarah Sjostrom of Sweden celebrates during the awarding ceremony for the women's 50m butterfly swimming event at the 17th FINA Aquatics World Championships held in Budapest, Hungary on July 29, 2017. (Xinhua/Ding Xu)

Gold medalist Sarah Sjostrom of Sweden celebrates during the awarding ceremony for the women's 50m butterfly swimming event at the 17th FINA Aquatics World Championships held in Budapest, Hungary on July 29, 2017. (Xinhua/Ding Xu)