
Gold medalist Sarah Sjostrom of Sweden competes during women's 50m freestyle swimming final at the 17th FINA World Championships held in Budapest, Hungary on July 30, 2017. (Xinhua/Ding Xu)

Gold medalist Sarah Sjostrom of Sweden competes during women's 50m freestyle swimming final at the 17th FINA World Championships held in Budapest, Hungary on July 30, 2017. (Xinhua/Ding Xu)