因此，前脑的绝缘化是在青少年晚期和二十岁初期完成的。

So it is with the forebrain's myelination during the late teens and early 20s.

youdao

智齿通常是最后长出的牙齿，这通常是在青少年晚期或二十岁出头时长出。

Wisdom teeth are normally the last teeth to appear.

youdao

智齿通常是最晚一个长出来的，通常当人们年龄增大逐渐成熟才长出来，也就是青少年晚期或二十岁出头的时候。

Wisdom teeth are normally the last teeth to appear in the mouth. It usually happens when people are older and wiser. That is, when they are in their late teenage years or early twenties.

youdao