"This is hard work, but people give freely of themselves because they know it's for them," said one mayor in Agadez.

“这项工作着实不易，但人们不计报酬地付出，因为他们知道这样做是为了他们自己。” 阿加德兹市的一位市长说。

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This is hard work, and it takes time.

这是一项既费时又艰难的工作。

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But this is hard work well spent.

但是，这样的努力却十分值得。

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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

So, marginal land is brought into play with hard work and ingenuity, and this is one of the things that Hanson emphasizes that is so helpful.

那么,边际耕地需要,在一定的生产条件下,生产收益正好足以补偿所需费用的土地,这就是汉森所强调的相当有益的一点

耶鲁公开课 - 古希腊历史简介课程节选

She says this is because her parents taught her about the value of hard work.

VOA: special.2009.07.17

Now, as David indicated, this is a hard slog, this is hard work.

WHITEHOUSE: President Obama and Prime Minister Cameron Hold a Press Conference | The White House

Sachs admits this is hard work that takes time, but he was willing to offer three golden rules in a recent conversation.

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Traditionally this is hard work that must be done by hand.

NPR: Guest-Worker Debate: Human or Mechanical Labor?