问题是我们没有取之不尽的资源。

The problem is we don't have a bottomless pit of resources.

《柯林斯英汉双解大词典》

一个常见的问题是我们不喜欢重写。

A common problem is that we don't like to rewrite.

youdao

如果飞行汽车成为现实，这些问题是我们必须预料到的。

These are problems we must expect if flying cars become a reality.

youdao

But the question is how are those of us of this generation, living that ethic out in the early 21st century?

但问题是,我们这代人如何，将在21世纪初的生活中体现这一道德？

普林斯顿公开课 - 人性课程节选

So, let's think about it, and let's think about what we're actually doing when we solve this.

确实更有效率的解决了问题,好，接下来让我们来想想,看我们实际上是怎么来解决这种问题的。

麻省理工公开课 - 计算机科学及编程导论课程节选

Well, this is a problem that we have solved and will solve in the weeks to come. See you Monday.

嗯，这是我们解决了的一个问题,并且将在接下来几周来解决这个问题，下周一再见。

哈佛公开课 - 计算机科学课程节选