The horses are “courageous, tenacious and overcome the difficult environment, ” a YouTube song about them says.

在Youtube上一首有关他们的歌中唱道，这匹马“勇敢、坚强，并战胜了困难的环境”。

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We have a lot of engineering challenges that we have to overcome in order to make this a commercial device, " Strano said, "but nothing is as difficult as the initial discovery."

“为了做这个商业的装置，我们有许多工程上的挑战要战胜，”斯特拉诺说，“但是没有什么会比最初的研发更艰难。”

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Here are some of the concepts that I use to overcome my dread of a difficult task.

我常用以下的方法来克服对艰巨任务的恐惧。

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He explains that despite their differences the plane crash in Russia is "a great loss for the nation, which will be difficult to overcome."

VOA: standard.2010.04.10

School teachers gave me the love and unconditional regard I needed to overcome a difficult childhood.

FORBES: Reframing Controversial Issues Often Resolves Them

Murray will have to overcome a far more difficult hurdle in the form of defending champion Nalbandian if he is to progress to the last four.

BBC: Murray maintains winning sequence

But we are here tonight to remember and celebrate a man who inspired a people and a nation to overcome another difficult time.

WHITEHOUSE: President Obama at the "Let Freedom Ring" Concert