举手投足、说话写字、消化呼吸,人类无论进行哪种活动都要用到身体的各种功能。但是,我们对每个时刻都在使用的身体了解多少呢?为什么婴儿脑袋大身子短,左眼和右眼可以分别运动呢?为什么人要有两个鼻孔?为什么一直张开嘴巴就喝不了东西?大家都觉得习以为常也往往被忽略的现象或行为,一旦仔细推敲起来,就会引起不少人对身体构造的思考,然后诸如此类的疑问也会随之而来。 Excessive gestures, words to write, digestion and breathing, no matter what kind of human activities have to use the body’s various functions. But how much do we know about the body we use at any given time? Why do we have a big, short head, a left-eye and right-eye movement? Why do we have two nostrils and why we can not drink until we open our mouth? Everyone thinks that phenomena or behaviors, which are often used and often overlooked, will cause many people to think about body structure once they are carefully scrutinized, and then such questions will follow.