back crawl

• 仰泳

back crawl的用法和样例：

例句

1. Most swimmers use the tumble turn.It is the fastest turn and is used in the crawl and backstroke.
   大多数运动员用滚翻式转身，这是最快的转身方法，爬泳和仰泳多用此法。
2. It revolutionized the butterfly and back stroke and now free style advanced and is one of the most effective tools to building momentum off the start and turn.
   它使蝶泳，仰泳和自由泳得以发展和改革，是出发和转身后创造推进力的最有效的手段之一。