Adolescents often face many changes and challenges during this important stage of life.

adolescents 是名词 adolescent 的复数形式，adolescent 来自拉丁语 adolescere（成长），指"青少年"，特指处于青春期（约12-18岁）的年轻人。这个词强调从儿童向成人过渡的成长阶段。