If S1-S2=t, then S1-t/2=S2+t/2, right?

來源: 萬斤油於 2024-01-04 07:19:16 [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.