重点讲解：
1. look up
（在参考书、列表等中）查检（事实或信息）；
eg. Please look up a fast train to Leeds.
请查一下去利兹的快车。
eg. I'm usually just using the search engines to look up information.
我通常只是用搜索引擎找一些资料。
2. keep on
重复；继续；
eg. Don't keep on bothering me.
别老磨人！
eg. You'll soon go to pieces if you keep on working like that.
如果你继续那样工作的话，很快就会垮下来。
3. run away
离开；逃离；躲开；
eg. Three years ago I ran away to Mexico to live with a circus.
3年前我逃到墨西哥，和一个马戏团生活在一起。
eg. He broke the window and ran away.
他打破窗子逃跑了。
4. finish up
完成；做成；
eg. We must finish up this business ahead of time.
我们必须提前把这件事了结。
eg. I am going to finish up a slide presentation of this year's profits.
我要完成一份有关今年盈余的幻灯简报。
