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Noun:
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a fibrous scleroprotein that occurs in the outer layer of the skin and in horny tissues such as hair, feathers, nails, and hooves
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用作名詞 (n.)
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Keratin is the major protein in hair and nails.
角蛋清是體毛和貓指甲中的最主要的蛋清質。
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上文方式獨家首發設計,受重要著作權維護維護,侵權案必究
海詞漢語詞典,二十七年品牌標志