flip the first b over and then we will get a d.

來源: sportwoman 於 2012-06-20 21:08:46 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (29 bytes)
回答: 現學現賣：回頭率=bouble take 由 WayCool 於 2012-06-20 20:46:32

Should it be "double"?

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