There are no flip turns to negotiate in marathon swimming, which is usually held in lakes and oceans, and the upper body is more important than the legs.
这种马拉松式游泳一般在湖泊或海洋中进行，不需要突然发力和转身，而且上半身的动作比腿部更关键。
Concerns shave also been raised over the viral load found in the water off Copacabana Beach, which will host the marathon swimming, and also in the sand itself.
科帕卡巴纳海滩的水域将举办马拉松游泳项目。而水域和沙滩的病毒含量也令人担忧。
Marathon, US: a dolphin at the dolphin Research Centre waits to be fed fish while swimming in a pen, as he acclimates to his new surroundings after being found.
美国，马拉松：一个海豚研究中心的海豚在池子里游泳的时候等待喂食，他已经适应了这儿的新环境。
Pole vaulting, sprints, shot put, weight lifting, swimming, cycling, target shooting, tennis, marathon and gymnastics were all events at the first Morden Olympic Games.
撑杆跳、短跑、铅球、举重、游泳、自行车、射击、网球、马拉松和体操是首届现代奥运会的全部比赛项目。
Du Toit's effort in the open water swimming marathon left you in tears.
杜托伊特在户外游泳马拉松中所付出的努力让人落泪。
Du Toit's effort in the open water swimming marathon left you in tears.
杜托伊特在户外游泳马拉松中所付出的努力让人落泪。
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