The prosencephalon divides into two sections — the telencephalon and the diencephalon.

前脑分为两部分——端脑和间脑。

They can regenerate the front portion of their brain, called the telencephalon.

它们可以再生其大脑的前部，即端脑。

All those things are awesome. But it wasn't until the appearance of birds and mammals that some animals' brains came to be dominated by the last of the five vesicles, the telencephalon.

所有这些东西都很棒。但是直到鸟类和哺乳动物的出现，一些动物的大脑才开始被五个小泡中的最后一个支配，端脑。