什么原理？增大腹腔内压力？Push it out?

来源: 未知于 2017-07-28 08:36:03 [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.