Mimic your favorite swimming strokes.

模仿你最喜欢的游泳姿势。

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Don't fling your arms and legs about like that. Make the proper swimming strokes.

别这样乱划乱蹬，要采用正确的游泳姿势。

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The principal swimming strokes are the crawl, backstroke, breaststroke and butterfly.

主要游泳姿式有爬泳、仰泳、蛙泳和蝶泳。

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The idea is simple: propel yourself down two narrow 120-metre-long bog water-filled trenches using only your feet (no swimming strokes allowed) and the first to past the peaty post is the winner.

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The first American to win more than one medal while swimming three strokes was Nancy Hogshead in the boycotted 1984 Games.

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If you do suddenly find yourself in close quarters with one of these beasts, your best bet is to get out of the water, swimming away with smooth, even strokes that won't attract its attention.

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