好的，来看看,一个昨天上课没讲过的例子。

Let's say, for example, we want to find - I am going to do a different example from yesterday.

youdao

好的，来看看,一个昨天上课没讲过的例子。

Let's say, for example, we want to find - I am going to do a different example from yesterday.

youdao