我靠，作用力和反作用力是第幾定律來著？過期了？

來源: biglow 於 2013-09-13 11:37:44 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.