肥胖症和终生做决定，解决问题困难有关系。

Obesity has been shown to be associated with worse decision making and problem solving throughout lifetime.

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这个问题困难很多。

This question is full of difficulties.

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解决这些数学问题很困难。

It's difficult to solve these mathematical problems.

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The problems that Frost's poetry poses for us as readers are not problems of reference. They can't be solved by footnotes.

他的诗歌给我们的困难,不是参考的问题，它们不能就用脚注解决。

耶鲁公开课 - 现代诗歌课程节选

The problems that Frost poses are problems of interpretation, - problems that provoke you to ask not, "what does he mean exactly?

弗罗斯特给我们的困难是翻译，是使人不发问这样的问题，“他到底要说什么“

耶鲁公开课 - 现代诗歌课程节选

Well, what it is is easily enough explained despite the sort of difficulty and thorniness of the word.

虽然我们遇到过很多困难和挫折,但这个问题很容易解答。

耶鲁公开课 - 文学理论导论课程节选