缀字课本

例句：

1. 1. She studied the textbook thoroughly to prepare for her exams.
   她仔细研究了教材，为考试做准备。
2. 2. The teacher asked us to read the textbook before class.
   老师要求我们在课前阅读教材。
3. 3. Students often use textbooks as a reference when learning new subjects.
   学生在学习新科目时经常使用教材作为参考。