单片机是一门基础课，但是它既难学又难教。

Single-chip is a basic course, but it is difficult and hard to teach.

youdao

我知道他是个难教的孩子，但你必须对他有耐心。

I know he is a difficult child, but you must be patient with him.

youdao

对于好的指导师来说，没有任何的东西是难教的。

Nothing is too difficult for a good instructor to teach.

youdao

教老狗耍把戏，难哉(人老则守旧)。

It is hard to teach an old dog tricks.

youdao

还是教两个学吹笛的人吹笛难呢？

Or tutor two tooters to toot?

youdao

还是教两个学吹笛的人吹笛难呢？

Or tutor two tooters to toot?

youdao