Some people may need to take medicines before they work hard or exercise.

VOA: special.2009.07.28

For a couple of reasons. In some ways, this would be nicer, do expected cases, it's going to tell you on average how much you expect to take, but it tends to be hard to compute, because to compute that, you have to know a distribution on input.

关注最快的情况，在某种意义上来说，因为一些原因这样想挺不错的，当我们处理一个给定的问题,计算平均时间的时候,是很难计算的，因为你并不知道输入的分布情况,这些输入会是怎么样的呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

I guess it's, it's attempting to take the, sort of hard science aspects of psychology,

这是试图运用心理学方面的科学知识，

毕业于心理学专业 - SpeakingMax英语口语达人

Adobe can take a long time to dry and become hard.

VOA: special.2009.01.12

Well, it's a little hard to see, but things tend to take off.

有点难看出来，但是在这里图线是上扬的。

麻省理工公开课 - 计算机科学及编程导论课程节选

Or whether you take a very hard line against them to try to force changes coming in from below within the government.

VOA: standard.2009.08.14

He speaks in a language of math and it is very important for students to be able to have hot copies so that they can take notes on the paper rather than be working very hard to copy down the equations that he used in these lectures.

他以数学语言授课,所以发给学生教学材料,是非常重要的,这样就可在纸上做笔记,而不用拼命,抄下他在课上,用到的等式。

麻省理工公开课 - 媒体、教育、市场课程节选

So in reality, we need to take into account a little bit more, and in particular, we need to take into account the abilities of players to hit the ball accurately and/or hard.

所以分析实际情况时要深思熟虑,比如说,我们需要把罚球队员的,射门力度跟精准度考虑在内

耶鲁公开课 - 博弈论课程节选

If you take newborn babies-- It's very hard to do research with newborn babies actually because of the consent procedure and everything, so most of this work is done in France, where they have no laws at all.

如果你去找些新生儿,由于知情同意书以及其他的问题,研究新生儿实际上是非常困难的,因此大部分的研究都是在法国进行的,因为法国并没有任何与此有关的法规

耶鲁公开课 - 心理学导论课程节选

And so what I'm really doing is inviting you to take a good, cold, hard look at death, and to face it and think about it in a way that most of us don't do.

那就是我要你们做的，认清，死亡的好和坏，面对它，然后思考它,用我们从没用过的方式。

耶鲁公开课 - 死亡课程节选