重点讲解：
1. break into 突然开始做（某事）；
The moment she was out of sight she broke into a run.
她一走出众人的视线就开始飞奔起来;I.7a^C+b,K8GDQ。
2. in detail 详细地；全面地；仔细地；
In this section we will analyze the business case and problem in detail.
在本部分中，我们将详细分析业务案例和问题uNtzLf91A++_HLaGl!3o。
3. act as 起作用；充当；
A trained dog can act as a guide to a blind person.
经过训练的狗能担任盲人的向导z^bbDjR%p-aT37ZzA。
4. wash away 冲垮；冲走；
Flood waters washed away one of the main bridges in Pusan.
洪水冲垮了釜山的一座主要桥梁*pJ*QISzuD#9mA。