But now we try to understand that in terms of the development of a part of their brain called the limbic system, so I'm going to show you the limbic system in red in the slide behind me, and also on this brain.
就是远离父母争取独立和在朋友间出类拔萃。 但现在我们根据他们大脑某部分叫边缘系统的发育 尝试去理解他们， 给你们看下红色的边缘系统，这个大脑里也有。