For backstroke, holding the arm out front doesn't really work.

对于仰泳，将手放前面并没有效果。

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Return to left, right, left right, then hold the physio ball with both hands for backstroke.

回到左，右，左吧，然后把球和健身球为仰泳。

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Whilst being interviewed after qualifying for the women's 100m backstroke final, Chinese athlete Fu Yuanhui mentioned her mystic energy helped her swim so fast.

中国运动员傅园慧在进入女子100米仰泳决赛后接受采访时提到，她的“洪荒之力”帮助她游得这么快。

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Tancock triumphed for England in the 100m backstroke , the previous race in a medal-packed Friday programme, and declared it "pretty cool" to be a double Commonwealth champion.

BBC: Commonwealth Games: Three golds for English swimmers

Missy Franklin, the 17-year-old swimmer from Colorado, scored more gold for America with a gutsy performance in the 100-meter backstroke Monday night just 14 minutes after she qualified for the finals of the 200-meter freestyle.

FORBES: The Olympics: An Amazing Display Of Teen Leadership

C. to contain some sort of morals clause, which will be particularly galling to an organization that has made a tough-cop reputation by busting teenagers for taking the wrong nasal spray before the 400-m backstroke.

CNN: ASIANOW - TIME Asia