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。
Process synchronization is an emphasis and difficulty in the teaching of operating system course.
课堂上我们应当将教学重点和难点记下来。
In class we should write down important teaching points as well as difficult teaching points.
写作训练是写作教学中的重点和难点。
The training of writing is a difficult and important point in teaching of writing.
如何有效纠错一直是写作教学的重点和难点。
How to effectively correct mistakes has been an important and difficult issue in writing teaching.
单词教学在初中英语教学中既是一个重点，又是一个难点。
Word teaching in Junior middle school English is not only a key point, but also a difficult one.
系统稳定性的判定是自动控制理论中的重点内容，也是自控理论教学中的难点。
System stability analysis is an important and difficult matter in the automatic control theory.
写作教学是对外汉语教学一个有机组成部分，既是教学的重点也是难点。
Writing, as an important part of language teaching, is not an easy task to accomplish.
写作教学是对外汉语教学一个有机组成部分，既是教学的重点也是难点。
Writing, as an important part of language teaching, is not an easy task to accomplish.
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