n.課本；教科書(shū)
Each student was issued with a textbook. 每個(gè)學(xué)生發(fā)了一本課本。
This textbook has twenty lessons. 這課本有二十課。
There is a glossary at the end of the textbook. 這本教科書(shū)后面有詞匯表。
教材
