下一个练习是蝶泳划臂练习.

The next drill is just a butterfly stroke drill.

我喜欢蝶泳。

I like the butterfly stroke.

初学蝶泳时，你会发现，蝶泳对体力的要求很高。

When you first start doing the butterfly stroke, you will find that it is a strength item.

蝶泳被列入正式比赛项目是在1958年.

The butterfly stroke had not accepted as a formal event until 1958.

游泳分为蛙泳, 自由泳, 仰泳, 蝶泳.

Swimming is divided into breaststroke, freestyle, backstroke, and butterfly stroke.

游泳分为蛙泳， 自由泳， 仰泳， 蝶泳。

Swimming is divided into breaststroke, freestyle, backstroke , and butterfly stroke.

你必须用你背部的肌肉来游蝶泳.

You need to use your back muscles to swim the butterfly - stroke.

在蝶泳中，打腿也非常重要。

The butterfly, the fly kick is very important, also.

我们通常把蝶泳踢腿称作海豚泳。

We often refer the butterfly kick as the body dolphin.

在蝶泳腿后开始腹部发力转体准备自由泳或者蝶泳的出水.

After the dolphin kicks roll to your stomach for your breakout in the freestyle and butterfly.