breaststroke

名词 breaststroke:

1. a swimming stroke; the arms are extended together in front of the head and swept back on either side accompanied by a frog kick

动词 breaststroke:

1. swim with the face down and extend the arms forward and outward while kicking with the leg

1. He can swim breaststroke, backstroke and crawl.
   他会游蛙泳、仰泳和自由泳。

breast.stroke

n.Sports （名词）【体育运动】
A swimming stroke in which a person lies face down in the water and extends the arms in front of the head, then sweeps them both back laterally under the surface of the water while performing a frog kick.
蛙泳：泳者脸朝下浸入水中，把两臂伸向头的前方，然后在水面下从侧面把两臂收回，同时象青蛙一样蹬脚的一种泳姿

【引伸】
breast.stroke.
v.（动词）
breast.strok.er
n.（名词）