The authorities are at their wits' end about juvenile delinquency.

青犯罪束手无策。

The problem of juvenile delinquency presented itself for the attention from the whole society.

犯罪这个问题引起了全社会注意。

We can curb juvenile delinquency by education.

我们可以通过教育来控制犯罪。

He is an expert in juvenile delinquency.

他是研究青犯罪专家。