原文是这么解释的

来源: viewfinder 于 2011-04-30 08:22:36 [档案] [博客] [旧帖] [给我悄悄话] 本文已被阅读：次 (269 bytes)

"If I have a stool sample I can tell how old you are," says Bork. "That seems useless because you already know how old you are, but it's proof of principle that it could maybe be used for all sorts of other things."

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