The administration has found that it is easy to receive applause in Europe for closing Guantanamo, but it is tricky to come up with an alternative that will serve the interests of justice and America's national security,"

VOA: standard.2009.05.21

This is a little bit of a tricky experiment, so we decided we'll just smoosh it all in, and we'll actually be able to account for it, because we'll take into account the area of all of those atoms.

因为我们要，考虑所有原子的面积，我觉得这个，黑板是不能自动上去的，好了，我们知道。

麻省理工公开课 - 化学原理课程节选

And we would need, to have to look at it, and it's going to be very tricky, by the way, as to what the right answer is.

我们需要去看一看，顺便说下，正确答案可能很棘手。

麻省理工公开课 - 计算机科学及编程导论课程节选

So, that is a tricky problem to begin with because if you take this formula here, it tells you y if you know t, but no, we're not saying that.

以这个问题刚开始的时候有点难度,因为如果你要用这个公式,求y的时候就一定要知道t,但是,我们不知道

耶鲁公开课 - 基础物理课程节选