二千年前的法子，中國滿大街都是，憑啥搞專利。除了嘴炮，沒一個具體例子，怎取信於人

來源: fuz 於 2020-03-03 20:52:10 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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