Experts say the situation is likely to continue until investors feel more sure about signs of economic recovery.

VOA: special.2009.08.21

OK, important -- if you are part of this group here think about it and make sure you understand that.

好的，这很重要，如果刚才你选了可逆过程,请好好想想并且保证已经理解了这个问题。

麻省理工公开课 - 热力学与动力学课程节选

to make sure that you speak with someone who is very knowledgeable about the prices of certain things.

一定要跟某些很了解价格行情的人谈谈。

关于购买艺术品 - SpeakingMax英语口语达人

But Professor Bedau says that nobody can be sure about the results of making new forms of life.

VOA: special.2010.07.20

Now, I'm not sure what kind of video we're talking about, and I'm not sure if the lecture will be the internet when we're all done. But nonetheless I'm gonna call this the next big thing-the video internet .

呃，我不确定我们要谈关于什么样的视频,我也不确定当这个讲座全部结束时,还是不是关于网络，但尽管如此,我还是要叫它为下一重大事件，网络视频。

麻省理工公开课 - 媒体、教育、市场课程节选

Some members of the local community had strong feelings about the death and worked to make sure the skeleton stayed on the island.

VOA: special.2011.06.29

So it looks like not too many more than half of you got this correct, so make sure you can look at your periodic table and figure out how to think about ionization energy in terms of z effective, not just in terms of memorizing what that trend is.

看起来只有一半多一点的人,做对了，所以请大家务必做到能够通过观察周期表,并在考虑电离能时,从有效核电量的观点出发，而不是仅仅依靠记住这个规律。

麻省理工公开课 - 化学原理课程节选

But I was sure of two things about the clergyman.

VOA: special.2010.03.27

Again, leaving aside the science, about which I'm sure some of you know more than me here, the issue of carbon emissions is a Prisoners' Dilemma.

抛开科学层面来说,我相信在座的一些同学比我知道的还多,碳排放问题也是个囚徒困境

耶鲁公开课 - 博弈论课程节选

I'm sure that he has all those reports. He knows about all of this,"

VOA: standard.2009.08.23

We talked about a few of these last time but I'm sure there's others, so what things did you come up with as you were thinking, anybody?

我们之前谈到过一些,我想一定还有别的,你们想到什么没有,谁来说说看

耶鲁公开课 - 生物医学工程探索课程节选

The onus is really on the government of the United States to reveal more about the ways in which it makes sure that arbitrary executions, extrajudicial executions are not, in fact,being carried out through the use of these weapons,".

VOA: standard.2009.10.27

Similarity predicts the success of a marriage and through a phenomena people aren't exactly sure about, couples become more and more similar over the course of a relationship.

相似性能预测到一段婚姻是否会成功,人们也解释不清这个现象，相处久了，夫妻之间就有了夫妻相。

耶鲁公开课 - 心理学导论课程节选

Renee Smith-Valade said in addition to making it through the media sessions, she and her staff have also worked hard in making sure the Vancouver Olympics Web site has been a source of good,fast,accurate and detailed information about the Winter Games.

VOA: standard.2010.02.25

The first thing I want to be sure was all students understand about the mechanics of the course and the best way to learn about that was to read very carefully the paragraphs at the bottom.

首先我想确认,大家都能明白这门课的授课形式,大家最好都去仔细阅读,刚发下去的课程大纲,请看这一页的底部。

麻省理工公开课 - 电影哲学课程节选