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1·Follow any dive in crawl stroke with from 3-6 of the fastest possible double-leg kicks.

在爬泳中，无论是哪一种出发跳水，入水后都要尽可能快速地打3 - 6次海豚腿。

2·While other styles like the breaststroke, front crawl, or backstroke can be swum easily even by beginners, the butterfly is a more difficult stroke that requires good technique to be feasible.

初学者也许能很容易地掌握蛙泳、自由泳或仰泳，但蝶泳却难得多，对游泳者的技术要求很高。

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

他会游蛙泳、仰泳和自由泳。

4·Guide to front crawl for beginners - Learn a few techniques from our expert swimming teacher, to build up your confidence in the water and your knowledge of the front crawl swimming stroke itself.

新手入门级的自由泳指导-向专业的游泳教练学习一些技巧，一方面可以自立下水的自信心，另一方面也掌握一些关于自由泳的知识。

5·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。

6·A Guide to front crawl for beginners - Learn a few techniques from our expert swimming teacher, to build up your confidence in the water and your knowledge of the front crawl swimming stroke itself.

新手入门级的自由泳指导-向专业的游泳教练学习一些技巧，一方面可以自立下水的自信心，另一方面也掌握一些关于自由泳的知识。