回複：回複：回複：Erdos 稱金幣題：（3星）

來源: 波斯王子 於 2010-03-10 20:24:03 [] [舊帖] [給我悄悄話] 閱讀數 : (58 bytes)

But how do you know the bag you took out 0 is good or bad?

請您先登陸，再發跟帖！