另外，运动员在开始任何蝶泳练习之前需要做一下身体状况的检查；！

Do for short distances. Check medical conditions of swimmers before practicing any butterfly drills.

youdao

另外，运动员在开始任何蝶泳练习之前需要做一下身体状况的检查；！

Do for short distances. Check medical conditions of swimmers before practicing any butterfly drills.

youdao