Didact
n. 说教者
🗣️ 情景例句
She is a terrible student.
她是一个极糟的学生。
What on earth has happened to trouble you so?
到底发生什么事让您如此发愁？
It may also be said that rational, industrious,useful.
也可以这样说，理智的、勤劳的、有用的。