Motion control system, with the characteristics of high practice, rapid update and great teaching difficulty, etc, is the core curriculum of electrical automation major in college.

《运动控制系统》是高等院校电类自动化专业的一门核心专业课程，具有实践性强、内容更新快、教学难度大等特点。

youdao

Process synchronization is an emphasis and difficulty in the teaching of operating system course.

在操作系统课程的教学中，进程同步是其中一个重点，也是难点。

youdao

What was the biggest difficulty/challenge/the most impressive thing in your teaching (practice)? How did you solve it?

教学/实习上遇到的最大困难/挑战/印象最深刻的事？如何解决？

youdao

For all the difficulty of doing a rigorous evaluation in order to improve teaching performance across the board, I suspect it is a whole lot easier to identify the worst teachers in the school.

FORBES: Getting Rid of Bad Teachers