It does not matter whether you swim long course or short course, you must learn to swim with the fly kick under water.

无论你是游长距离的还是游短距离的，都必须学会水下蝶泳腿。

youdao

It does not matter whether you swim long course or short course, you must learn to swim with the fly kick under water.

无论你是游长距离的还是游短距离的，都必须学会水下蝶泳腿。

youdao