视频概述

1. （成年以前）青年时期

He had been a talented musician in his youth.

他年轻时是一个天才音乐家

2. 青春；朝气

Youth is not a time of life, it's a state of mind.

青春不是年华而是心境。

3. 愣头青

The fight was started by a gang of youths.

一群愣头青挑起了这次打架。