He solved the difficult problem.

The doctor performed a difficult operation.

The brain has a complex structure.

And the reality that this presents is a complicated one.

He solved the difficult problem easily.

He solved the difficult problem easily.

This is how I solved the difficult problem.

This is how he solved the difficult problem.

I underwent major surgery last year.

I want her to do the difficult work.

I want to leave this difficult job to her.

I felt like I was performing this elaborate act.

This is a community that has experienced a difficult history of discrimination on the island.

It is clever of her to solve such a difficult problem.

In Imperial China, the bureaucracy was headed by a Chief Counselor.

In sum, Iran presents a complex, sometimes confusing picture.

So, these tiles would make a complicated, self assembling checkerboard.

I wrote computer programs to make complex graphics like this.

Computers are capable of doing very complicated work in a split second.

Do you think there is another answer to this difficult problem?

Computers can perform a very complicated task in a fraction of a second.

Computers can perform a very complicated task in a fraction of a second.

In a second experiment, the canny crows had to solve a trickier problem.

It is about a struggling young girl who gets caught up in a couple s complex relationship.

ISTANBUL Turkey s Prime Minister Recep Tayyip Erdoğan has taken on a daunting challenge.

Islam came peacefully to the south, slightly more differently complicated history in the north.

Mateen's motives haven't been confirmed, and what is known paints a complicated picture.

I believe that we can settle this most difficult question in an equitable way.

The wars collateral damage has been massive by some accounts, more than a million Iraqis have died, directly or indirectly, because of the war.

But mistakes in the early years of those wars complicated that already difficult battle.

But cheap prices for the performing arts do not solve the thorny problem of access for youth.

But the science and engineering of HDR has been challenging, and it is only now that the first power stations are emerging.

But it has also been developing a sophisticated political and technological system to control online information.

I spent my entire early career making complex stuff.

To untangle the complex policy web surrounding the renminbi s value will demand greater regional stability, not less.

Frustrated with a bureaucracy reluctant to implement his political vision, Qaddafi bypassed traditional institutions and claimed a direct dialogue with the country s population.

Acknowledging the important contribution provided by migrants and migration to development as well as the complex interrelationship between migration and development,

Acknowledging also the important contribution provided by migrants and migration to development, as well as the complex interrelationship between migration and development,

I think the French media covering international news usually do a good job unpacking Lebanon's political complexity.

In applications where higher performance is an issue, it can make sense to expend more effort to deal with a more complex, non linear storage organization.

Understandably, companies and households are becoming even more cautious inevitably making a difficult job for policymakers that much harder.

What a mess have you ever tried to wire up a system as complex as this?

Advanced economic systems have very complex webs of contracts, such as financial derivatives. For Europe, Leijonhufvud argues, this implies a three pronged approach that focuses on levels of leverage, maturity mismatches, and the topology of the web, that is, its connectivity and the presence of critical nodes that are too big to fail.

This goes into the more sophisticated part of our process, and the really hard work, multi step separation process begins.

Advanced economic systems have very complex webs of contracts, such as financial derivatives.