"用雙腿當尺子"?這個靠譜嗎？炮彈飛的是直線距離，有這麽巧剛好能走路是直線.

來源: braker999 於 2019-07-13 07:33:29 [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.