She spent hours practising the breast stroke.
她花了几个小时练习蛙泳。
Could you teach me the breast stroke?
你可以教我蛙泳吗？
Note the grace and ease of the breast stroke.
还有优美和安逸的蛙泳。
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。
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。
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