要说骑车伤屁股，那是姿势不对，车子不fit。双手，双脚，屁股各承体重的１／３。

来源: 爱吃肉的胖子于 2014-11-24 10:52:04 [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.