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青春期后的男性一般都会长胡子。胡子比头发长得快,这是雄性激素作用的结果。生殖机能越旺盛,胡须生长就越快。长胡子部位的血管分布要比头发根部多,养分
Post-puberty men tend to be bearded. Beard grows faster than the hair, this is the result of male hormones. The stronger the reproductive function, the faster the beard grows. Long beard parts of the vascular distribution than the hair root more nutrients