oops, I accidently pressed the sub-mit button. I think

來源: bearsback 於 2010-01-16 21:19:13 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (95 bytes)

people abuse this phrase. It's a term in logic, which I never spent time trying to understand

請您先登陸，再發跟帖！