We can curb juvenile delinquency by education.

我们过教育来控制犯罪。

He is an expert in juvenile delinquency.

他是研究青犯罪的专家。

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

当局对青犯罪束手无。

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

犯罪的这个问题引起了全社会的注意。