是啊，大概叫做 high intensity interval training, 好多这样的课啊

来源: newnewid888 于 2013-04-30 11:36:24 [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.