出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第287页（269字）
比喻学生胜过老师，后学超过前辈，例李老师教导出来的学生个个都是博士，真是青出于蓝。
Every single one of Mr．Li，our teacher's students have in due course earned their doctorate degrees．It is just as the saying goes，"The pupil learns from and outdoes his teacher．"