老师正在讲课，爱丽丝打起瞌睡来了。
老师正在讲课，彼得打起瞌睡来了。
林子珍老师正在讲课，学员们也很认真的学习。
Students are concentrating during the class taught by Teacher Lin.
世界上最大的老师正在讲课，彼得打起瞌睡来了。
The Biggest in the World Peter dozed off while his teacher was talking.
当老师或教授在讲课时，我们通常在课堂上谈论记笔记的事情，但在这种情况下，当我在读其他文件时，我正在做笔记。
We usually talk about taking notes in class when a teacher or a professor is speaking, but in this case, I'm taking notes as I read other documents.
我们正在听老师讲课。
那是在一个晴朗的早晨，我们正在安安静静地听老师讲课。
It was a sunny morning, we are quietly listening to the teacher.
这个班的同学正在听老师讲课。
我们正在听英语老师讲课。
10月12日，一名乡村学校的阿富汗女孩正在课堂上聚精会神地听老师讲课。
An Afghan girl listens to the teacher during class at the Naswani school October 12 2010 in Eraq village Afghanistan.
我们现在正在听老师讲课。
我正在听老师讲课，但我听不见他讲的话。
我正在听老师讲课，但我听不见他讲的话。
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