I think it's still possible for us to stamp out al- Qaida, to make sure that extremism is not expanding but rather is contracting.

VOA: special.2009.02.21

And also, you can't take land unless you make sure that there is as much land as possible left for other people to take as well.

同时，你不能掠夺他人土地，除非你保证,还有足够的土地留给其他人使用。

耶鲁公开课 - 公正课程节选

And that's very nice, because this allows me to be sure that my FOR loop is going to terminate.

因为这让我确信我的FOR循环是会终止的,因为只要集合是有限的。

麻省理工公开课 - 计算机科学及编程导论课程节选

They are trying to make sure that cacao can be grown in a way that is fair to the farmers and safe for the environment.

VOA: special.2010.02.17

So if you're taking... so you have to make sure that whenever you take land that there is enough left for other people to use... - Right.

所以。。。你得保证,占有土地时，要有足够剩余,留给其他人，-对。

耶鲁公开课 - 公正课程节选

"And we want to make sure that NASA is going to be there for them when they want to take their journey."

VOA: standard.2009.07.20

But the president has run into stiff opposition from conservative Republicans, and even moderate Democrats now believe it is likely that the president will have to settle for a compromise bill that is sure to disappoint his liberal supporters.

VOA: standard.2009.09.28