应该做到课上是老师课下是朋友的翻译：Class is the teacher of class and friend 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Should do the class teacher after class is a friend

Class is the teacher of class and friend

Should achieve in the class is teacher under the class is the friend

We should be able to achieve on the class teacher is the next lesson is a friend

Class is the teacher of class and friend