textbook和text的区别
textbook: n. 教科书，课本 Read chapters 1 to 5 of the textbook . 阅读课本靠前章到第五章。 It is designed as a textbook for a one-term course . 它可用作一学期的教材。 She is a walking textbook of medicine . 她是活的医学教科书。 I mislaid my english textbook . 我不知把英语课本丢在哪儿了。 In this...