For example, let's address the elephant in the room and discuss the redundancies.

比如，我来处理棘手的问题吧，讨论裁员。

This question can be a tough one.

这可是个棘手的问题。

They're looking to confront a more insidious threat, the rise of global temperatures.

希望应对一个更棘手的威胁——全球气温上升。

But this is where it gets tricky.

这却是棘手的地方。

But this is where things get tricky.

但这就是棘手的地方。

Brains may decay first, but decaying guts are much worse.

大脑会最先腐烂，但是内脏腐烂是更棘手的。

So this is where it gets tricky.

这就是事情比较棘手的地方。

That's a tough call. What do you think?

这真是个棘手的问题。你？

In the past Iran has found clever ways to circumvent an array of less formidable sanctions.

过去伊朗巧妙地规避了各种棘手的制裁。

Giving life advice is a tricky business.

给予人生建议是一件棘手的事情。

The more difficult issue to deal with is climate change.

更棘手的问题是气候变化。

Let's try tricky words in a row.

让我连续尝试一些棘手的单词。

But he's facing a number of difficult challenges this time around.

但是这次面临着许多棘手的挑战。

But the real tricky part was the training methodology.

但真正棘手的部分是训练方法论。

It's tricky to navigate, and involves risk.

这是一个棘手的问题，涉及到风险。

It's been a surprisingly sticky question to untangle.

这是一个需要解开的非常棘手的问题。

A more tricky example is your eyes.

一个更棘手的例子是你的眼睛。

Thorny issues are subjects that are difficult to deal with.

棘手的问题指的是难以应对的问题。

So distributing and storing these vaccines is tricky.

所以分发和储存这些疫苗是很棘手的。

Well, that's the sticky one. It's going to need a lot of research.

棘手的就是这一点，我还需要多做一些调查。