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

Yeah, MIT's filled with geniuses. That's for sure.

麻省理工学院到处都是天才，这是无疑地。

我遇到的天才们 - SpeakingMax英语口语达人

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

For next time, make sure that you will have read at the very least Milton's great poem, and he wrote it when he was only twenty-one years old, "The Ode on Christ's Nativity."

下一讲，同学们至少要读完,弥尔顿的一首伟大诗作，他写这首诗时才21岁，《基督降生颂歌》

耶鲁公开课 - 弥尔顿课程节选

Again it's like anyone who does important things it's hard to judge the whole picture and on that I am sure he has created value for the economy.

同理，对于那些做着重要事情的人们,很难估测大局,不过我很肯定的是,他已经为经济创造了价值。

耶鲁公开课 - 金融市场课程节选

So that's here, and if I knew they were choosing Right for sure, that's the probability of 1 that they're choosing Right, and if I choose Middle I get 4, that's here.

对应的是这个点,如果说对手肯定选右,即他们选右的概率是1,此时我选中的收益是4,就是这个点

耶鲁公开课 - 博弈论课程节选

Let's assume you know that for sure.

假设你对此确信无疑。

耶鲁公开课 - 公正课程节选

I'm sure that's true for any sport.

我敢肯定看任何比赛也都是这样的。

现场观看篮球赛 - SpeakingMax英语口语达人

I'm not sure why it's not S for save but it's write out and that means save.

我也不明白为什么不用S代表“保存“而是用“写出“,“写出“也就是“保存“啦。

哈佛公开课 - 计算机科学课程节选

She costs C for sure, that's a wash because B, the way we've worked things out, B was $2, C was $1, So B/2-C is a wash.

她承担C的成本,收益是零,因为B,按我们设定的金额,B是2美元,C是1美元,所以B/2-C是零

耶鲁公开课 - 博弈论课程节选