胡子作为男士独有,有人说它既是权力和威严的象征,又是一种特有的装饰品。其实男孩在十四五岁时上唇就开始长出细软的茸毛,到二十岁左右,于口周及两颊就渐渐长出真正的胡须。此乃是男子汉体内开始分泌较多雄性激素的结果,又标志着第二性征的成熟。胡须有密有稀,一般男子约2.5万 Beard as a man unique, some people say it is both a symbol of power and majesty, but also a unique ornament. As a matter of fact, the boy started to grow fine velvet hair on his upper lip when he was fourteen years old. By the age of twenty, his real beard gradually grew on the mouth and cheeks. This is the result of more male hormones began to be secreted in the male body, which in turn marks the maturation of the secondary sexual characteristics. There are densely beard whisper, the average man about 25,000