subadolescent

adj.&n.=preadolescent

在成年前的、青春期之前的

形容词

1、She's still in her subadolescent years, so she's not quite a teenager yet.
她还在青少年之前的年龄，所以还不是十几岁的青少年。
2、The subadolescent stage is a crucial period of physical and emotional development.
青春期前的阶段是身体和情感发展的关键时期。