n.不法行为，少年罪犯，过失，罪过
The authorities are at their wits'end about juvenile delinquency.
当局对青少年犯罪束手无策.
We can curb juvenile delinquency by education.
我们可以通过教育来控制少年犯罪.
an increase in juvenile delinquency
青少年犯罪的增加
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