If found guilty, BAE may face huge charges but lawyers say the case may be very difficult to prove.

VOA: standard.2009.10.01

Now let's imagine a somewhat more difficult case.

现在想象一下,一个更加复杂的问题。

耶鲁公开课 - 死亡课程节选

There may be circumstances under which it's the case but it's often difficult to control.

可能在某些环境下可以做到,但是通常情况下很难控制。

麻省理工公开课 - 热力学与动力学课程节选

Prosecutor Brammertz says Karadzic's lack of cooperation with the court will make the case more difficult.

VOA: standard.2009.10.26

Let's make the red light the symbol of 'go.'" And now with the ecological movement it would be very difficult to make the green light the symbol of "stop," and in any case all sorts of complications would arise. Right?

我们来假设，红灯的意思是出发“,那么难道,绿灯的意思是停止吗？,这样会引起各种不必要的麻烦？

耶鲁公开课 - 文学理论导论课程节选

I never met anybody who seemed more like an author than this person, and yet he's raising the question whether there is any such thing, or in any case, the question how difficult it is to decide what it is if there is.

我从来没有遇见过比他看起来更像作家的人，现在他提出了一个问题，问无论如何，如果有这么个东西的话那么决定它是什么有多难。

耶鲁公开课 - 文学理论导论课程节选