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

So that you will come away with a sense of what you can do, what you can't do, and what kinds of things you should use to tackle complex problems.

因此你们才能对,你们能做的事儿，不能做的事儿,和用何方法去,解决棘手问题有一个基本概念。

麻省理工公开课 - 计算机科学及编程导论课程节选

Very difficult problems, but in my judgement, all solvable if we generate the country in the kind of bipartizan political cooperation and political courage that will be necessary to fix them.

这些问题很不容易解决，但我认为,不是不能解决，只要我们,以这种两党制的合作形式治理国家,还要有治理它们的政治勇气。

普林斯顿公开课 - 国际座谈会课程节选

So that would suggest that education is probably not going to get the job done, because that's not the main driving reason because most people know that they shouldn't eat so much junk food, but education is what we default to when we think about what to do.

所以你们可能认为,教育并不能解决这个问题,因为这不是主要原因,大部分人都知道不该吃那么多垃圾食品,教育是思考解决方法时被忽略了的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

If it's not already there, what will happen?

如果这里还不能解决问题，那会发生什么呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

Typically up till now, we've looked at things that can be done in sublinear time. Or, at worst, polynomial time. We'll now look at a problem that does not fall into that. And we'll start with what's called the continuous knapsack problem.

至今为止我们已经处理过,亚线性问题，最多也就是多项式问题,我们现在要看的问题则是不能用这些解决的,我们将要开始讲连续背包问题。

麻省理工公开课 - 计算机科学及编程导论课程节选

Because, if Iraq spreads if you can't get peace between Israelis and Palestinians, and that conflict continues, conflict in Lebanon, conflict with Syria Then you have the Iraq War turning into complete chaos.

如果伊拉克问题蔓延,或是如果不能解决巴以冲突，or，indenpendently，如果冲突加剧，黎巴嫩问题，叙利亚问题,伊拉克战争现在已经发展到一团糟。

普林斯顿公开课 - 国际座谈会课程节选