delinquent

失足青年

A young person who commits crimes or behaves unacceptably.

犯有轻微罪行的年轻人。

问题儿童

A young person who behaves in a way that is illegal or not acceptable.

指行为非法或不被社会接受的年轻人。

不良行为

Behaviour, especially of a young person, that is illegal or not acceptable to most people.

指非法的或不为大多数人所接受的行为，尤指年轻人的行为。

An illegal or immoral act, especially one committed by a young person.