It's not really hard. You just make your bed neat, remember to stand up straight, and always answer every question with "Yes, Drill Sergeant."

VOA: standard.other

Bad things can happen, so it's really, really hard to just focus on getting things right and not winning the argument.

坏事情总会发生，所以要想将精力,集中于把事情做好,而不是去赢得这场争论真的很难。

耶鲁公开课 - 金融市场课程节选

it's not all just hard work, you can have fun as well

不光全是用功，你也可以好好玩，

做交换生来到这里 - SpeakingMax英语口语达人

And I am not going to walk away just because it is hard.

VOA: standard.2010.01.22

But part of the process of being systematic is not assuming that I'm going to get a lucky guess. But not even thinking really hard at this point. But just pruning the search space.

但是系统化的过程是不允许,假设我做出了,一个幸运的猜测的,而是逐步缩小搜索空间。

麻省理工公开课 - 计算机科学及编程导论课程节选

But for the young who make up most of the population, learning this history has been hard to do - schools have up to now just not taught it.

VOA: standard.2010.04.19

Now for the hacker edition, if you are feeling up to a bit more of a challenge you'll find that when you run the game, one it's not all that hard to use some ASCII art just make it a little fancier as the teaching fellow who implemented this solution did.

对于升级版，如果你能应付更大的,挑战，你会发现当你在玩这个游戏时，用一些字符画把它做得,比那些教学人员做的更有新意,并不是那么困难。

哈佛公开课 - 计算机科学课程节选

That psychology is really hard and somewhat applicable to not just markets, but other things.

那种心理的确是很难理解，而且在一定程度上,它不仅仅适用于市场，也适用于其他事物。

耶鲁公开课 - 金融市场课程节选

An accent is very hard to shake and it's not just an accent.

口音很难改掉,而且问题还不止是口音

耶鲁公开课 - 心理学导论课程节选

Well, it was not very hard for me to draw this red blood cell here, it's just an oval, and one reason I draw it like an oval, is that that's basically what it looks like if you look at it.

我可以很容易的画出,一个血红细胞,就画个椭圆足矣,因为它看上去就是这个样子的

耶鲁公开课 - 生物医学工程探索课程节选

It's hard to explain. I'm not an expert, so I just...

这很难解释。我不是一个专家，所以我只能……

英国的啤酒 - SpeakingMax英语口语达人