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1·Mimic your favorite swimming strokes.

模仿你最喜欢的游泳姿势。

2·Don't fling your arms and legs about like that. Make the proper swimming strokes.

别这样乱划乱蹬，要采用正确的游泳姿势。

3·The principal swimming strokes are the crawl, backstroke, breaststroke and butterfly.

主要游泳姿式有爬泳、仰泳、蛙泳和蝶泳。

4·It will make them safer in the water, more confident and ready to learn formal swimming strokes.

这么做会使他们更安全的水，变得更自信并准备好去学习的正式游泳的姿势。

5·Swimming is both as a competitive sport and recreation. The principal swimming strokes are the crawl, backstroke, breaststroke and butterfly.

游泳既是竞赛运动又是娱乐。主要游泳姿式有爬泳、仰泳、蛙泳和蝶泳。

6·The annual event, held in honor of International bog Day, requires that flipper-outfitted snorkelers swim along a 360-foot (111-meter) stretch of bog without using conventional swimming strokes.

一年一度的该项赛事是为了纪念国际沼泽地日，比赛要求穿着脚蹼的潜水者不使用常规的游泳姿势游过一条360英尺(111米)的路程。

7·Freestyle, butterfly, back stroke and breast stroke are four commonly seen strokes in swimming competition.

自由泳、蝶泳、仰泳和蛙泳是游泳比赛中常见的四种泳姿。

8·I've often seen swimmers who have been working on their Stroke Length, swimming with an impressively low SPL – let's say 12 strokes for 25 yards – but a thoroughly inefficient style.

我经常看到泳者练习他们的划手滑行长度，有些是让人印象深刻的低划数游泳（譬如说划手12次游25码）但是非常没有效率的游泳技巧。

9·How many strokes did you learn in your swimming classes?

上游泳课时你学过几种游泳姿势。

10·There are few things in swimming that cross the lines of all strokes, but learning the underwater dolphin is certainly the most important.

有一些东西在游泳时，所会的线条，而是学习所有中风水下海豚肯定是最重要的。