dolphin kick是蝶泳的腿部动作，看这个

 

In the butterfly stroke, swimmers execute a technique with their legs called the dolphin kick. In the dolphin kick, both legs do a simultaneous whipping movement, with the feet pointed. This looks a bit like the up and down movements of a dolphin's tail, which explains the name of this swimming technique.

所有跟帖： 

• 啊，还真是的， -zhuangqiushui- ♀ (238 bytes) () 11/04/2021 postreply 17:33:08