上课要认真听讲。

Class must listen earnestly.

youdao

第二，上课时要认真听讲，做好笔记，以便于以逅温习。

Second, the class to listen carefully, take notes, so in order to meet unexpectedly review.

youdao

第二，上课时要认真听讲，做好笔记，以便于以逅温习。

Second, the class to listen carefully, take notes, so in order to meet unexpectedly review.

youdao