鸭逃不掉, 只要猫的速度比鸭的大pi倍以上

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no - ANSWER to this question is yes, (4.60338811) -guest007- 给 guest007 发送悄悄话 (332 bytes) () 05/16/2010 postreply 19:44:57

回复:no - ANSWER to this question is yes, (4.60338811) -jinjing- 给 jinjing 发送悄悄话 (243 bytes) () 05/17/2010 postreply 19:52:54

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