This is really, really difficult.

Very, very hard to think that you will influence us.

It s very hard to explain this by molecular recognition.

And this is very difficult to do because of our structures.

It's very difficult.

This is difficult.

This, appearing at first glance to be perfectly obvious, is actually very difficult.

That's a difficult one.

It's very difficult to understand him.

It's very difficult to understand him.

It's very difficult to understand her.

It's very difficult to understand you.

She's very hard to please.

It's very tough to win.

This is extremely hard.

But this is hard.

Very hard to find. Maybe you've got some examples of it.

I know this must be hard on you.

It's a very difficult tongue twister.

This game is so hard.

That's a very tough job.

In my business it's very difficult work.

So this gets a little challenging because the dynamics of this robot are quite complicated.

It's quite hard, actually, to get those very small changes.

The first embrace is something that we think, Oh, this is very easy, but it's actually getting harder, and that's paying attention to the world around us.

This is difficult to believe.

I know this is hard.

I know this is difficult.

It is not easy to speak English well.

English is pretty hard, isn't it?

It's very difficult to translate this word.

It's very difficult to carry out that project.

The first step is very difficult.

This exam is not so difficult.

That's a very difficult question.

This is a very difficult case.

This is too difficult for me.

This is hard for you, isn't it?

Third. Good! This is hard, right?

In Africa, it's very, very hard to engage men.

It's very, very difficult to breath. You get altitude sickness.

It's very hard to learn, to feel a lesson.

Speaking English is very difficult for me.

It's very hard to get rid of bad habits.

Russian is very difficult to learn.