translation.en: 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.
translation.zh: 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。