First, you must listen to the teacher carefully, it means less work after class.

首先，你必须认真听老师讲课，这意味着课后作业少了。

youdao

Firstly, if student who do not go to the class, never listen to the teacher, do not finish the homework can pass the course, it is unfair to the diligent student.

首先，如果不去上课，没有听老师讲课，不完成作业的学生也可以通过考试，这对勤奋的学生是不公平的。

youdao

Use it as a help, and this is the same as a spiritual teacher or spiritual teaching - it can be a great help to listen to a tape or see a video, but don't become totally dependent on that.

只是作为一个帮助来使用它，就像一位灵性导师或是灵性教导一样聆听一卷录音带或是看一个视频，会有很大的帮助，但不要完全依赖于那个。

youdao