sorry. My experience was their concepts some of them are differe

来源: didadida 于 2012-09-17 10:29:02 [] [旧帖] [给我悄悄话] 阅读数 : 0 (53 bytes)

from what we learned. especially on estimation

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• we have to accept it. -didadida- ♀ 给 didadida 发送悄悄话 (0 bytes) () 09/17/2012 postreply 10:30:57

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