老貧是學數學的?數學功底了得!
所有跟帖:
• 這個不是數學貼呀,一點好玩的東西。 -貧論員- ♂ (0 bytes) () 09/19/2011 postreply 10:21:30
• 這個不是數學貼呀,一點好玩的東西。 -貧論員- ♂ (0 bytes) () 09/19/2011 postreply 10:21:30
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