So I started to talk to the VCs and asking for $10 million at a very, very difficult time in Internet history.

就在互联网历史上最艰难的时期，我开始跟风险投资商接洽，向他们要1000万美元。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

Isn't it difficult being a mother and a professor at the same time and keeping a balance between the two?

同时做母亲和教授是不是很困难呢？两者之间取得平衡不容易吧？

教授的梦想 - SpeakingMax英语口语达人

I'm not saying you want a job at an investment bank because it's also demanding and difficult.

我不是说你想在投行工作,是因为它既苛刻有困难。

耶鲁公开课 - 金融市场课程节选

I worked on specifically, I looked at -and this is also the reason why it's difficult to say what is a just university, because we didn't just look at Princeton, we didn't just look at Ivy League Schools or at least private institutions.

我专门研究的是,顺便，这也是为什么,为公正的大学下定义很难得原因，因为我们研究的不仅仅是普林斯顿大学，也不仅仅是常青藤学校,至少不是私人学校。

普林斯顿公开课 - 人性课程节选

Now this isn't the first time in this course that I've paused over a moment at a crossroads where you can't possibly take both paths but where it is obviously very, very difficult to make up one's mind.

现在是这个课程中第一次,在一个分叉路口停下,我们不可能同时走两条路,但是这也显然是非常难以决定的一个地方。

耶鲁公开课 - 文学理论导论课程节选

So, if you smile at somebody, and you just hate their guts but you want to smile at them, it's--unless you're quite gifted it's difficult to fake a really good, really happy smile.

所以，你对某人微笑，你很讨厌他们，但你要对他们微笑，除非你很有天赋,很难去假笑，伪装真正的微笑。

耶鲁公开课 - 心理学导论课程节选

the work doesn't seem to be that much more difficult from what's at other universities.

功课也没有比别的大学难很多。

对于赞助入学的看法 - SpeakingMax英语口语达人

Like, it's really difficult especially at a school like Columbia,

不过，在像哥伦比亚这样的大学里做到这一点着实不易。

想学好英语吗？ - SpeakingMax英语口语达人

Internet industry was in a very difficult time at that time, at that period, and we gradually realized that this company cannot really survive if we stick with the backend technology providers thing.

当时互联网行业正处于困境，如果坚持做后台搜索技术提供商,这个公司将无法生存。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

Most of us find that rather difficult thing to believe that the person could be constantly changing in this way without having any way at all to tell.

大多数人很难相信,人可以不断地,变化，而且是以这种,无法揣测的方式变化。

耶鲁公开课 - 死亡课程节选

The phenomena is known as "emotional contagion, where if you're facing somebody, for instance, and they're they look at you in a face of absolute rage, it is very difficult to just sit there without your own face molding in accord to their own.

这种现象就是情绪感染，例如，你看着某人，他们怒气冲冲看着你，你很难只是坐在那里,不去回应他们的愤怒。

耶鲁公开课 - 心理学导论课程节选

It is in fact a very, very difficult and derivative act of the mind to try to forget that I am looking at a sign that says 'exit' and, in fact, just looking at what is there without knowing what it is.

事实上，试图忘记那个写着存在的标志,和只知道它存在而不知道它是什么，是非常难的事情。

耶鲁公开课 - 文学理论导论课程节选