重点讲解：
1. stand out
突出；出色；显眼；
eg. The device clearly stands out among the others.
这个图案在众多设计中脱颖而出。
eg. The richly fig out young woman stand out at the party.
那位衣饰富丽的年轻女郎在宴会上引人注目。
2. break down
（讨论、关系或系统）失败，破裂，失灵；
eg. She broke down from lack of rest.
她因缺乏休息而衰弱。
eg. The telephone system has broken down.
电话系统失灵了。
3. finish off
结束；
eg. He began to tidy up his desk and finish off the week's work.
他开始整理书桌，结束一周的工作。
eg. He finished off the story in his usual manner.
他还像往常那样结束了这个故事。
