Humes problem is a quite difficult one in the history of philosophy of logic.

休谟问题是逻辑哲学上的一大难题。

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Taking photographs outside is a quite difficult thing, and many things may stop your work like bad weather, hard roads and etc.

户外摄影是一件非常辛苦的事，阻碍重重，如糟糕的天气，泥泞的路等等，那么，每次出去您会带些什么装备？

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In brief, the brain drain question solution involves to enterprise management and operation each aspect, moreover is a quite difficult process.

总之，人才流失问题的解决涉及到企业…更多经营管理活动的各个方面，而且是一个比较艰难的过程。

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That's a quite difficult argument to pin down does it work or does it not work.

这个论证很难确定,是不是说得通。

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So, if you smile at somebody, and you just hate their guts but you want to smile at them, it's--unless you're quite gifted it's difficult to fake a really good, really happy smile.

所以，你对某人微笑，你很讨厌他们，但你要对他们微笑，除非你很有天赋,很难去假笑，伪装真正的微笑。

耶鲁公开课 - 心理学导论课程节选

"The cycle is quite a difficult process to break, " says Rogge's Mr. Bell.

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It will be quite a difficult proposition.

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"It was quite a tough and difficult day for us, " said Schumacher.

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