They work hard all the time in order to give us a better life.

为了让我们过得更幸福，他们一直在努力工作。

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Coach Graham knew there was really only one way to teach kids how to make it stronger: You give them something they can't do; they work hard until they find they can do it, and you just keep repeating.

格雷厄姆教练知道，只有一种方法可以教会孩子如何让它变得更强：你给他们做不到的事情；他们努力练习，直到发现自己可以做到，而你只需要不断地重复。

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They work hard, don't they?

他们很努力，不是吗？

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

VOA: special.2009.07.28

When the people never used any chemicals, you know, they work hard on the field.

那时候，人们从来不用任何化学品，而是在田地里辛勤劳动。

问上门厨师 - SpeakingMax英语口语达人

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

Men feel they can be neither of these and they work hard to establish self esteem.

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They work hard, contributing to our society, often doing jobs native-born Americans will not do.

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They work hard to keep the business out of family gatherings and so far have been successful.

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