And this is a very challenging idea. It's a very challenging idea to mainstream media.

It's not very challenging any more.

Something is very challenging to me.

DM She's very tough it's most challenging.

But that makes an interpreter's job very challenging.

It's going to be very challenging to deal with.

But deciphering the script is a very challenging task.

These have indeed been very challenging times for our Organization.

They're challenging the very notion of Western models of development.

It's a very challenging task. But more to come later.

And that's, I think, very challenging for Yemen right now.

Because to find a place like this today on Earth is really very, very challenging.

The past year was indeed very challenging for the humanitarian community.

And this is a very challenging idea. It's a very challenging idea to mainstream media. It's a very challenging idea to anyone who has invested an enormous amount of time and expertise, and who has a lot of energy invested in the notion that he or she knows better than everyone else.

I had two friends who had recently died months after having very challenging surgeries.

This has been a particularly challenging year, in which the IAEA has performed very well.

This is really a business venture, one that addresses a very challenging segment of the market.

Tremendously challenging.

That was challenging.

Why so challenging?

But, for everyone else, particularly small and medium size firms, the credit environment continues to be very challenging.

You know the uni is the most challenging, so number ten is challenging.

Challenging gender based violence

Not a challenging task.

These tuned structures allow the spines, friction pads and ultimately the adhesive hairs to grab onto very challenging, difficult surfaces.

A bit more challenging, right?

So this is more challenging

Are you challenging my orders?

So, all things considered, China s looming leadership transition is shaping up to be a very challenging period for China and the world.

A bit more challenging, right? (Laughter)

And that's challenging because it's easy.

Your job needs to be challenging.

This is challenging work to do.

So, we're used to not challenging religious ideas, and it's very interesting how much of a furor Richard creates when he does it.

And so, that allows you the flexibility to go into very challenging terrain and actually make your way where you want to go.

But striking the proper balance is challenging.

That will be particularly challenging for Bernanke.

That is an assumption that needs challenging.

Emerging and challenging issues deriving from implementation

Skepticism, because you must always be challenging.

I'm challenging you to find you value

And people reinventing themselves in challenging times.

It's this immensely exciting and challenging problem.

Listen, I'll teach you a challenging trick.

They are challenging forces they cannot control.