juvenile psychology

例句：

1. 1. The juveniles wereplaying in the park.
   青少年们在公园里玩耍。
2. 2. She is a juvenile writerwho writes stories for children.
   她是一位年轻的作家，为儿童写故事。
3. 3. The juveniles are enjoying their summer vacation.
   青少年们正在享受他们的暑假。