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A human hair consists mainly of a protein called Keratin. It also contains some moisture and the trace metals and minerals found in the rest of the body. 人类的头发主要由一种叫角朊的蛋白质组成,并含有水分及在身体其他部分
发表于:2019-02-08 / 阅读(49) / 评论(0)
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A human hair consists mainly of a protein called Keratin. It also contains some moisture and the trace metals and minerals found in the rest of the body. 人类的头发主要由一种叫角朊的蛋白质组成,并含有水分及在身体其他部分
发表于:2019-02-14 / 阅读(61) / 评论(0)
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