As such the term freestyle is often used as a synonym for the front crawl.

因此人们常说的“自由泳”基本就成了“爬泳”的同义词。

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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。

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Most competitive swimmers choose the front crawl during freestyle competitions, as this style provides the greatest speed.

但是在自由泳比赛中多数选手会选择爬泳，因为这种泳姿速度相对较快。

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Despite wanting to just crawl into bed and crash after the 10-hour overnight flight, I returned to the front desk and told the clerk that the room was not acceptable.

BBC: What to check out when you check in