Definition: a book about a particular subject, written for students Level: A2
这本物理教科书包含了所有基础概念。
This physics ___textbook covers all the fundamental concepts.
这本教科书包含了大量的练习题。
This ___textbook contains a lot of practice exercises.
我需要一本新的英语教科书。
I need a new English ___textbook.
