Sure enough 11:55 comes, it is the last thing they are doing.

确保到11：55时间足够了，这就是他们做的最后一个题目。

麻省理工公开课 - 固态化学导论课程节选

Make sure that you study everyday.

确保你每天都花时间学习哦！

Make sure 课堂 - SpeakingMax英语口语达人

But they spent a lot of time, energy, and money on being sure that they would have a supply of water to hold them for a long siege.

他们花费了大量的时间,精力,和金钱来确保,在长期的围城中他们可以获得足够的水源

耶鲁公开课 - 古希腊历史简介课程节选

So be sure to find some time that works for you.

所以确保有时间能用来工作。

耶鲁公开课 - 死亡课程节选

We're also posting a practice exam for you to take, so after you're completely done your studying, it's good to have everything done before you take the practice exam, and then sit down just with this sheet here and your calculator, and ideally a timer, and make sure you can do the practice exam in the allotted amount of time.

我们还将给出一份模拟试题，因此在你完全复习好之后，最好先复习完,再做这份模拟试题，坐下来,只拿出这张表与计算器，最好还有个计时器，确保自己完成模拟题,在规定的时间内。

麻省理工公开课 - 化学原理课程节选