The teacher conducted a unit revision session to help students consolidate their understanding of the chapter.
老师进行了一次单元复习课，帮助学生巩固对章节的理解。
Unit revision is essential for ensuring that students have a comprehensive grasp of the material before moving on to the next topic.
单元复习对于确保学生在继续下一个主题之前对材料有全面的掌握是必不可少的。