看了一下孙杨1500米比赛，他的划水频率是30左右。

来源: 湖西于 2022-09-17 14:16:24 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.