All right. So these exemplify, in various ways, what can be done with these three levels.

好，这些例子以不同的方式说明了，如何运用这三个层次。

youdao

All right. So these exemplify, in various ways, what can be done with these three levels.

好，这些例子以不同的方式说明了，如何运用这三个层次。

youdao