黃油是給小牛哺乳的奶中提出來的，有著豐富的營養成分；牛油來自牛的脂肪，隻是能量貯存的一種方式。

來源: fuz 於 2022-11-12 20:16:37 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.