如果某人吃了10克黃油，就可以獲得與吃20克人造奶油相同的飽足感，那麽他會選哪個呢？

來源: Shubin 於 2022-10-04 09:38:25 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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