肌肉不够强壮才会伤到膝盖，所以关键是增强腿部肌肉。

来源: .川晔于 2018-10-03 20:54:22 [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.