It is a difficult problem.

Doctors have a difficult problem.

We believe that in the context of the rapid development of biotechnology and the increased threat of bioterrorism, the establishment of a verification mechanism within the Convention seems to be a challenging problem.

Obama s explanation of a Syrian policy might look something like this Syria is a difficult problem that, left unchecked, could threaten US interests in the region.

And as it turns out, that's a really hard problem, because you have to build a small, portable robot that's not only really affordable, but it has to be something that people actually want to take home and have around their kids.

Very very hard.

Those are really tough.

My language is very complicated.

My life is so hard.

Is Arabic difficult?

My life is very difficult to manage.

Such changes are difficult.

The problem is too difficult to solve.

This word is difficult to pronounce.

At first, it is difficult.

Hebrew is a difficult language.

Arabic isn't a difficult language.

Sami's classes are hard as fuck.

The Berber language is so difficult.

The equation was very difficult.

English is difficult, isn't it?

Changing these is a difficult task.

A general problem is that long term predictions about submarine or underground storage security are very difficult and uncertain, and there is still the risk that might leak into the atmosphere.

Mathematics is difficult for me.

Third. Good! This is hard, right?

English is difficult, isn't it?

There are great goals and difficult tasks ahead of us.

In earlier times, when original sin was taken more seriously than it generally is today, the suffering of animals posed a particularly difficult problem for thoughtful Christians.

They're difficult integrals.

Is it so difficult to write?

Arabic is not that hard.

Sami had a very difficult life.

These are difficult questions, but they have simple solutions.

Lebanon is passing through a difficult and sensitive period.

Being someone who had had a very difficult childhood, a very difficult adolescence it had to do with not quite poverty but close.

Washing laundry by hand is hard and time consuming.

Of course, difficult choices lay ahead.

And now China faces a dilemma.

But like every other interesting experience, it is a very difficult one.

should play hard to get

These are more realistic, but more difficult to build.

AB 722 is 500 ooh, that's a harder one.

Algeria is an especially difficult case.

So policymakers are facing difficult challenges.

Indeed, only three difficult hurdles remained.