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

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

is very painful.

Innovation is difficult.

Getting that energy is very, very difficult.

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

But that is difficult to do.

Getting it there is really tough.

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.

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

But assessing quality improvements is difficult.

In fact, this is better than a wheel, because when you try to drive with your bicycle on the beach, you will notice it's very hard to do.

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

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

That's a hard question to answer.

It's a tricky situation.

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.

It's very, very difficult to speak at the end of a conference like this, because everyone has spoken. Everything has been said.

This book is difficult to understand.

For a coral, branching into different copies is the most natural thing in the world.

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

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

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

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

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

This book is hard for me to read.

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

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 s very hard to explain this by molecular recognition.

Another difference, and I have to describe this, because it's very personal, another great difference between the helicopter and the volantor in my case the Skycar volantor is the experience that I've had in flying both of those.

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

Getting that energy is very, very difficult. It all comes down to that power plant how to get a large amount of power in a small package.

This leaves the US in a difficult position.

Such a system did not have to be difficult to implement.

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.

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.

Unanimous decisions are very desirable.

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.

It is hard to understand this blunder.