A也吃的好草，怎麽就物美價廉了？他的例子裏如果是A吃普通草，也產優質奶才能支持物美價廉的結論。

來源: phoenix05 於 2024-03-13 08:57:54 [舊帖] [給我悄悄話] 本文已被閱讀：次

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