We can't even pay attention to what the teacher says in the class.
休息不好甚至使我们在上课时无法集中注意力听讲。
Just like after-class study, study in class is also very important. It occupies most of our time. We must pay much attention to it.
正如课外学习那样，课堂中学习也很重要，它占用了我们的大部分时间，我们必须重视它。
In practice teaching, we should pay attention to after-class experiments, on-the-spot teaching and CAD drawing.
在实践教学中，注重课外实验、现场教学、CAD绘图。
In class, we pay much attention to the teacher and take notes. If we have problems and cannot find the correct answers, we will rise up our hands and ask the teacher.
上课的时候，我们全神贯注的听课并且做笔记，如果遇到问题而又没有答案的时候，我们将会举手问老师。
We must pay more attention in class.
课上我们必须更加专心。
We must pay more attention in class.
课上我们必须更加专心。
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