人们赞美眼睛是心灵的窗户,颂扬心脏为生命的动力,却很少讴歌内分泌系统。其实,隐居深处、不露声色的内分泌系统,是人体功劳卓著的“无名英雄”。男孩到了十四五岁,肌肉发达,须发浓黑、声音变粗、喉结突出,成为翩翩少年;女孩到了这个年龄,月经来潮、乳房隆起,体态丰满、声音清脆。这些变化,表明一个人已经脱离儿童时代,越过少年时期,迈入成年。然而,有时人们也会看到一些与众不同的情况:有的人好像长起来没个完,个子高得惊人;有的人又一直停留 People praise the eye is the window of the soul, praising the heart as the driving force of life, but rarely praising the endocrine system. In fact, seclusion in the depths, without revealing the endocrine system, is the outstanding human “nameless hero ”. The boy arrives at the age of fourteen years old, muscular, to be made dark, thick voice, Adam’s apple prominent, become a young man; girls to this age, menstrual cramps, breast uplift, fullness, crisp voice. These changes show that one has moved beyond adolescence and into adulthood from childhood. However, sometimes people will also see some unusual situations: some people seem to grow up endlessly, their height is staggering; some people have been staying