is very painful.

Innovation is difficult.

It's a difficult thing it's a marketplace which is very fragmented and a consumer population with no income.

And that's a hard sell to a graduate student.

But that is difficult to do.

Getting it there is really tough.

However, it's a little difficult to do that in fruit flies.

But assessing quality improvements is difficult.

It's extremely frustrating on any camera under 1,000 dollars.

Everyone is for innovation yet it is very difficult to do.

Now, launching a moral revolution has got to be hard, right?

This idea is hard for a lot of people to accept.

It is difficult and time consuming to build mature democracies.

And it is difficult especially in a democracy to be patient.

Forecasting is always difficult, but especially so in troubled times.

However, the return to productivity in rural areas is proving difficult and slow.

This is difficult and smacks of protectionism, but it is neither impossible nor necessarily inimical to healthy globalization.

In the case of fire and forget missiles, it may be possible for the missile to be programmed to take certain actions including self destruct if serious missile faults are detected in flight through built in test.

Russia s legal system is imperfect, and even serious violations of corporate governance are difficult to punish.

Post conflict munition security and disposal is undoubtedly a challenge.

It is not sufficient, because sustaining the fruits of governance reform without accompanying growth is difficult.

It is precisely because structural change in this institution is so difficult that it has been so rarely attempted.

It's unbelievable. It's basically sulfuric acid, and it's being just dumped out, at incredible rates.

It's especially hard to do when people hate you, OK, because you don't really, in a sense, want to completely understand why people hate you.

History teaches that global economic order is difficult to establish and maintain in the absence of a dominant economic power.

Yet imposing capital controls on inflows is difficult and sometimes leaky.

Caroline was well aware of his infidelities, as they were well known and he told her about them.

We ve gained the trust and credibility of our readers, which is a hard thing to do so we thank them for letting us into their daily lives.

Indeed the random detection of lung cancer in the early stage (stage 1) in the x ray image is difficult.

Getting 191 nations to agree on a common future is hard enough, but doing nothing because we fear that we can never reach consensus on the issues before us is worse.

This is difficult, because official statistics mismeasure or simply miss many of the real economy s hidden rules and practices.

The cost of this power failure, though difficult to calculate, is surely huge.

That is hard on Ambassador Anne Patterson, Secretary of State John Kerry, and Deputy Secretary of State William Burns, who just visited Cairo.

That claim is difficult to deny, at least if by human we mean member of the species Homo sapiens.

Shorting a stock is difficult and risky it is difficult because borrowing stocks is hard to do, and it is risky because shorting has limited upside but infinite downside.

While at the interface of physics and chemistry, chemical physics is distinct from physical chemistry in that it focuses more on the characteristic elements and theories of physics.

It's closer than you think.

Crafting a culture of security is difficult and often at odds with the dynamic and decentralized work environment of a fast moving newsroom.

Determining when it is permissible to interfere with parental choices is challenging, given the deference that parents typically receive.

But the credibility needed to anchor expectations is difficult sometimes even impossible to achieve when two targets are being pursued simultaneously.

That's a hard question to answer.

It's a tricky situation.

This is a difficult balance to achieve, and, without pressure from the markets, I am unsure how it will play out.

I find that hard to believe.

This book is difficult to understand.