juvenile

1. N-COUNT A juvenile is a child or young person who is not yet old enough to be regarded as an adult. 青少年[正式]

The number of juveniles in the general population has fallen by a fifth in the past 10 years. 在过去的10年中，青少年在总人口中所占的比重下降了1/5。

2. ADJ Juvenile activity or behaviour involves young people who are not yet adults. 青少年的[ADJ n]

Juvenile crime is increasing at a terrifying rate. 青少年犯罪在以惊人的速度增加。