Madam C.J.Walker explained it this way: "If I have accomplished anything in life, it is because I have been willing to work hard."

VOA: special.2010.03.28

They're efficient enough that you have to work hard to find opportunities, but not perfectly.

如果你付出足够的努力,还是能发现机会,所以市场并不完全有效

耶鲁公开课 - 金融市场课程节选

Everybody can have fun, but you have to work hard.

每个人都能够享受生活，但也必须认真学习。

想学习宗教学 - SpeakingMax英语口语达人

This means they have to work very,very hard.

VOA: special.2010.05.30

If you want to get like As, you have to work hard for it.

如果你想得到A，那你得非常非常刻苦努力。

是考试期间 - SpeakingMax英语口语达人

He said his government will work hard to end piracy, but he said the problem of poverty will first have to be tackled.

VOA: standard.2009.10.30

I mean, they have no idea how hard we work, and look at this gigantic split infinitive, to dramatically help.

他们不知道我们有多么努力地工作，注意到这之间的巨大鸿沟，会有很大的帮助。

麻省理工公开课 - 固态化学导论课程节选

"You have to provide incentives for employees to work hard. And yes,the pay structure for Wall Street vs.the rest of America looks a bit out of wack.

VOA: standard.2010.07.23

You don't have to work very hard to figure out what these different facial expressions mean.

你不必努力地去学习,去辨析不同面部表情的含义。

耶鲁公开课 - 心理学导论课程节选

"We are working hard toward an agreement. It is clear we have the major elements of an agreement in place and now we have to do the hard work of conforming the treaty and some other small negotiations,".

VOA: standard.2010.02.03

In fact, if the other person is working hard, or is cutting back on their carbon emissions, you have every bit more incentive to not work hard or to keep high carbon emissions yourself.

实际上,如果其他人正在努力工作,或者正在尽量减少碳排量,你总会有想偷懒的动机,或者总是继续大量排碳

耶鲁公开课 - 博弈论课程节选

We think a lot about weight in this country, but weight is a remarkably carefully controlled parameter of a person, that is, you have to work pretty hard to gain weight or to lose weight.

我们身在一个特别关注体重的国家,然而体重是一个,需要小心地控制地人体指标,这就是说,你必须付出相当多的努力,才能增加或减少体重

耶鲁公开课 - 生物医学工程探索课程节选

So, now that you're fully immersed in CS50 it's quite understandable 0 if you want people to know that you're in CS50 and so the teaching fellas have been hard at work putting together this year's line of apparel which includes sweatshirts, CS50 T-shirts and the like.

现在你已经完全沉浸,于CS50的学习，这完全可以理解,你很想让大家知道你在CS50学习0,我们的助教们已经,将今年的服饰收集在了一起,其中包括运动衫，CS50，T恤等等。

哈佛公开课 - 计算机科学课程节选