重点讲解：
1. pick up
对话中意思为：（通常指开车）接载，取走；
eg. We drove to the airport the next morning to pick up Susan.
我们第二天早晨开车去机场接苏姗。
eg. She went over to her parents' house to pick up some clean clothes.
她去了趟父母家取些干净衣服。
2. How come
为什么，怎么会……；怎么回事；
eg. You were an hour late this morning, how `come?
今天早晨你迟到了一小时，怎麽回事？
eg. How come you got that post in the adventure-joint enterprise ?
你是怎么会找到合资企业那份工作的？
3. fail in
在……方面失败了；缺乏……，在……方面不足
eg. By my calculation, 5% of the students will fail in the exam.
据我估计，百分之五的学生不能通过这次考试。
eg. You will bring the blame of others upon yourself if you fail in this.
如果你在这件事上失败了，就会招来别人的非议。
4. hang on
对话中意思为：紧握；牢牢抓住；
eg. She was conscious of a second man hanging on to the rail.
她意识到还有另一个男人紧抓着栏杆。
eg. He managed to hang on to a piece of rock protruding from the cliff.
他设法抓住了悬崖上向外伸出的岩石。