蝶泳的英文：
butterfly stroke

参考例句：

Butterfly stroke is my favourite.
我最喜欢蝶泳。

We often refer the butterfly kick as the body dolphin.
我们通常把蝶泳踢腿称作海豚泳。

My favorite stroke is Butterfly. She had a very rapid stroke.
我最喜欢的姿势是蝶泳，她频率很快

butterfly是什么意思：
n. 蝴蝶；无恒心的人，没常性的人；蝶式游泳
v. 切开摊平

a butterfly stroke
蝶式游泳

She is a butterfly.
她是一个轻浮的人。

The butterfly is a kind of water sport.
蝶式游泳是一种水上运动。

A larva metamorphose into a chrysalis and then into a butterfly.
幼虫变为蛹，然後再变成蝴蝶。

The caterpillar will change into a beautiful Butterfly.
毛毛虫将会变成美丽的蝴蝶。

stroke是什么意思：
n. 击球（动作）；划水动作；轻抚；抚摩；笔画；行动；钟声；中风
v. 轻抚，抚摩（物体表面或头发等）

a butterfly stroke
蝶式游泳

Her husband is a stroke.
她丈夫是个尾桨手。

Who is the stroke of the boat.
谁是这艘船的尾桨手。

He stroked the ball into the bag.
他轻轻一触，球就进袋了。

An oak is not felled at one stroke
万事不能一蹴而就