哦，一般人只能直立前屈50度，体操运动员可直立后屈50度。。。

来源: 子正于 2015-09-11 13:33:05 [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.