神经系统是一个动态的、不断变化的系统。
The nervous system is a dynamic, ever-changing system.
A good book is a book that changes you.
我们唯一需要害怕的就是害怕本身。
译文：人的一生能有多少个今天呢，今天不去做事实在是可惜了。赏析：今日事今日毕，我们要活在当下，每天都要做些有意义的事情。明天有明天的事情，万事都要等到明天去做，就会蹉跎光阴。
Every smell we perceive is a complex interaction between molecules and receptors, and understanding this interaction is key to understanding our sensory experiences.
