"This is at a time when we are working to relaunch negotiations and we believe that these actions make it more difficult for our efforts to succeed.

VOA: standard.2009.11.17

Well a number of you have spent this past week playing with this particular tool which is a project the course has been working on for some time in an effort to make it easier and more social to actually shop for courses.

在过去的一周里,已经有一部分人开始使用这种特殊的工具了,这门课程一直在致力于这一工具的开发,目的是为了让课程变的更简单,选课更人性化。

哈佛公开课 - 计算机科学课程节选

it's very hard for the professors to schedule a lot of individual time for the people who can't make it.

教授很难为那些没法按时考试的考生另外安排时间。

临时抱佛脚？也做过 - SpeakingMax英语口语达人

Besides the actual performance, they look at how long it takes the soldiers to complete their tasks, since time can make the difference between survival or death for those who are lucky enough to be alive after the nuclear blast.

VOA: standard.2010.07.21

It's still--they can make losses for a long time before they're in trouble, so presumably there won't be a problem, but in principle there could be and so that's the kind of issue that we have now.

在陷入困境之前的很长一段时间内,他们可以承受亏损,也可以假设不会有任何问题发生,但是原则上讲是有可能会出问题的,这就是我们面临的现状

耶鲁公开课 - 金融市场课程节选

"Perhaps it is time for the U.S. to talk directly to the Israeli public and make it clear that they are serious and this old game that we've been playing for many years of this so-called peace process that does not lead to anything is over,".

VOA: standard.2009.06.09

We are basically committed to each other for sex but it's very hard to make those relationships last a long time because we might not have anything in common, we might not share anything with each other, we might not trust each other, we are not particularly bonded to each other.

我们基本上只有激情的承诺,长时间维持这种关系很困难,因为可能双方没有任何共同点，没有共享的东西，我们可能互不信任，不是特别亲近。

耶鲁公开课 - 心理学导论课程节选