Learning such as drilling, drilling deeper, more able to find the essence of knowledge. Learn to crawl before you go.
学习如钻探石油，钻得愈深，愈能找到知识的精髓。先学爬，然后学走。
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。
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。
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。
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