juvenile mentality

例句：

1. 1.The young athletes are competing in the national championships.
   年轻的运动员正在参加全国锦标赛。
2. 2.The juvenile delinquents were sent to rehabilitation camps.
   少年罪犯被送往康复营。
3. 3. The juvenile offenders will face stricter penalties under the new law.
   根据新法律，少年罪犯将面临更严厉的处罚。