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1·She spent hours practising the breast stroke.

她花了几个小时练习蛙泳。《柯林斯英汉双解大词典》

2·My son can do breast stroke now.

我儿子现在会蛙泳了。

3·Could you teach me the breast stroke?

你可以教我蛙泳吗？

4·Im good at freestyle and breast stroke.

我擅长自在泳和蛙泳。

5·Note the grace and ease of the breast stroke.

还有优美和安逸的蛙泳。

6·He can swim breast stroke, backstroke and crawl.

他会游蛙泳、仰泳和自由泳。

7·European children learn the breast stroke; they often don't know how to crawl.

欧洲小孩学习蛙泳；他们经常不知道怎样进行自由式游泳。

8·It's hard to be humble When I do the breast stroke through an underground tunnel.

很难谦虚当我做蛙泳通过地下隧道。

9·When I swim fast breast stroke, I try to picture that I can almost dig into a cross position with body flat on the water and my arms are a 180 degree.

当我快速蛙泳时，我总是能展现一个十字姿态：身躯平躺在水中，手臂展开180度。

10·Freestyle, butterfly, back stroke and breast stroke are four commonly seen strokes in swimming competition.

自由泳、蝶泳、仰泳和蛙泳是游泳比赛中常见的四种泳姿。