1.We can curb juvenile delinquency by education.

1.我以通过教育来控制少。

2.He is an expert in juvenile delinquency.

2.他是研究青少的专家。

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

3.当局对青少束手无策。

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

4.少的这个问题引起了全社会的注意。