n.教科书,课本( textbook的名词复数 );
例句:
This publishing firm is planning a new series of school textbooks.
这家出版公司正打算出一套新的系列教材.
All those who haven't got the textbooks, please come to the front.
凡是没拿到课本的同学请到前面来.
The teacher is giving the children their new textbooks.
老师正在给孩子们发新课本.