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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"There are so many people who work so hard everyday but they can't realize the benefits of that hard work to the extent that they should."

VOA: standard.2009.11.03

This is the remarkable thing about so many of Milton's similes: they're always bursting out of whatever critical or theological constraints that we work so hard to impose on them.

这是弥尔顿的比喻中的亮点：,它们总是能从我们强加的,无论多批判多神学的束缚中,挣脱出来。

耶鲁公开课 - 弥尔顿课程节选

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

So why do liberals work so hard to create the perception that "taxing the rich" will solve our problems even though the top 10% of taxpayers already pay 70% of all federal income taxes and many low-income Americans pay no federal taxes at all?

CNN: Why America needs a tax reformation

"We are all young and want to succeed, so we work hard together as a team and that is where our strength lies".

BBC: Pienaar praises Koeman

The Wall Street Crash was a product of an economy in deep depression - so governments work hard to prevent such problems happening again.

BBC: A fateful day for investors