Choose difficulty level

A key property of a formal language is the level of difficulty required to decide whether a given word is in the language.

When China develops to a certain level, we don't have to struggle that hard, we don't have to only focus on making a living everyday, and neglect other things.

It's not that hard.

That is very difficult.

He managed to get off the difficulty.

It's not too hard to learn Arabic.

They do really have a difficult job.

But we were faced with a very difficult choice.

Her first pregnancy was very difficult.

And it's a very tricky path to do it.

But striking the proper balance is challenging.

That will be hard to pull off.

Land acquisition became progressively more difficult.

Even inflation can be very hard to measure precisely.

Seventh, exiting QE is tricky.

But predicting the timing of this transition is difficult.

Strained political relations among most of Asia s sub regions make a region wide security structure or more effective resource cooperation difficult to achieve.

But predicting how nature works is a very risky game.

Part of the difficulty arises from the perpetual African dilemma of identity.

If such actors obtain nuclear and biological materials, the world will look very different.

But water is extremely difficult and prohibitively expensive to import.

As an Ethiopian I find it hard to swallow what you wrote about the country.

Victims may have difficulty in concentrating and some depression.

It is made of 60 multiple choice questions, listed in order of difficulty.

Even at Japan s world beating export firms, reluctance to confront the ingrained interests of the old boy network has made it difficult to prune less profitable product lines and the workers who make them.

To be sure, some of our neighbors are difficult.

The appropriate timing of fiscal retrenchment is, in fact, difficult to decide.

The endgame to any crisis is difficult to predict.

That situation makes protection of and access to civilians extremely difficult.

Avoiding double dip recession will be difficult.

Restoring elements of manufacturing competitiveness is hard.

16.17 In the rural areas, registration of births are more difficult.

Vacancies in specialized areas have been extremely difficult to fill.

History offers two clear lessons reducing public debt is incredibly difficult without growth, and increasing growth is incredibly difficult with a huge burden of public debt.

This makes it even harder for our companies to compete and prosper.

But it is no surprise that coming to terms with history can be damnably difficult.

In the case of Zimbabwe, it is extremely difficult to obtain such information.

Where that threshold, by nature vague and variable, actually lay would be extremely difficult to determine.

This would be a difficult challenge under any circumstances and is all the more daunting against the backdrop of the Arab Spring s destabilization of the economic systems across the Middle East and North Africa.

That said, it's been really hard to ignore football for the last couple of weeks.

For Greece and Portugal, staying in the eurozone will be a tight squeeze.

Promoting and protecting the rights of children, including children in particularly difficult situations

Promoting and protecting the rights of children, including children in particularly difficult situations

For instance, the fuel efficiency of every automobile and truck is fixed, and most travel is non discretionary.