The book can be used as self-study material or as a basis for further practice in class or as homework.

本书既可作为自学用书，也可作为课内或课外进一步练习的基础。

youdao

The book can be used as self-study material or as a basis for further practice in class or as homework.

本书既可作为自学用书，也可作为课内或课外进一步练习的基础。

youdao