It's a hard work, so you must work hard.

这是一件艰苦的工作，因此你必须努力去做。

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Li Bai suddenly understood the importance of hard work, and he started to work hard at school.

李白突然明白了努力学习的重要性，他开始在学校努力学习。

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But hard work should be a reward in itself because not all hard work of lasting value is compensated handsomely.

可是努力工作本身也是对自己的一个奖励，因为不是所有努力工作都能得到可观的回报。

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They stopped laughing when they found he could do the hard work of a cowboy as well as any of them.

VOA: special.2010.08.05

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。

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And so, just a lot of hard work and a lot of time at the golf course in the summer.

所以，夏天时，一直努力练习，在高尔夫球场花了不少时间。

高尔夫俱乐部的回忆 - SpeakingMax英语口语达人

And with hard work -- with hard work, strong faith, and a little courage, great things are always within our reach.

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It's hard work, really hard work, often requiring tremendous resources (lactation consultants, machines that make you feel like a dairy cow, shields and all sorts of bizarre contraptions) that can take weeks, even months, to get right.

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Hard productive work will always trump hard dumb work.

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