1.throw up 抛起

Why did you throw up such a good job?
你为什么放弃了这么好的一个工作?

She has thrown up her studies.
她已经放弃了学业。

2.want to 想要做；想要…

I want to insure my house.
我要为自己的住宅保险。

We want to be quite clear on this point.
关于这一点，我们要完全弄清。

3.operating system 操作系统

The virus has infected the operating system of his computer.
病毒已使他的计算机操作系统受到传染。

After you and the team have decided on the operating system, choose the application.
在您和您的团队决定操作系统以后，下一步应选择应用程序。

4.on sale 廉价出售；贱价抛售

Among the horses on sale he saw his own horse.
在出售的马群中，他发现了自己的那匹马。

We have an interesting new database program in the pipeline. It should be on sale early next year.
我们正在设计一个有趣的新数据库程序,明年年初大概就能上市了。