复习这个单元的所有课文，然后看看你们是否理解每篇课文的大意。
Review all the lessons in this unit and see if you can understand the main idea of each lesson.
首先，你先要了解单词的意思，或是从课文中了解这个单词的具体意思，这样你就能够很好的理解。
First, you have to know the meaning of the word, or rather from a context, so you can understand it better.
教授对难点的澄清帮助他顺利地理解课文。
The professor's clarification helped her to understand the textbook.
应用推荐