Turner says it's very difficult to provide hard-and-fast earnings estimates for Northern Peru in these early days.
All of this is the difficult politics of ambitious change - the hard choices of implementation.
But trade-union rules make it difficult to hire and fire workers, lower-paid jobs for the less skilled are hard to come by, and a combination of high taxes on low incomes and generous welfare payments reduces the incentive to seek work at all.
ECONOMIST: Is a large flow of migrants a good or a bad thing?
Studies have shown that "difficult" patients tend to have nebulous, hard-to-pin-down symptoms like headache, dizziness, and fatigue, notes Kurt Kroenke, M.
Most computers were expensive and difficult to operate, and would typically be hard-wired directly to another computer if a connection was needed.
It is supposed to be much more difficult to show a benefit in the "hard events"--heart attack, stroke and death--than in the broader swath of "extra" heart problems that AtheroGenics measured in its trial.
He was a popular choice when appointed as successor to Bob Dwyer as Tigers coach in 1998 and moulded a side in his own image - hard as nails in the forwards and very difficult to play against.
Even if Mr Duncan Smith wanted to distance himself from hard-liners and Eurosceptics, he would find it difficult.
"I feel I'm fighting against everything - it's hard to keep throwing myself into these difficult races, " she said.
Cheshire East Council's leader warned of "difficult times ahead with hard decisions to be made" after the half-year review revealed the cash problem.
China's deep supply-chain network is hard to replicate quickly elsewhere, making it difficult for some factory owners to move.
The 10-place grid penalty in China was very difficult as it's a hard track to get close to people and overtake so, in many ways, I knew that was going to hurt us.
This not only makes it difficult to attract high-flyers into the public sector, but also makes it hard to raise standards by, for instance, putting the best head teachers in charge of groups of schools.
I've learned a hard and difficult lesson considering the childhood environment that I was brought up in - not to discriminate against any plant or creature.
Opposing coaches have complained that the Broncos' all-blue uniforms make it difficult to prepare for games at Boise because it's hard to differentiate Broncos' players against the blue backdrop.
"I think - and this is where the New York Times may have had trouble as well - that scientists are very difficult to write about, partly because it's very hard to get your head around what they're doing, " he says.
It has deals with companies such as Dell and HP to embed its tracking agent into their computers' boot-up software, where it is more difficult for a thief to remove than from the hard drive.
Each play-off game will be difficult, but I'm fully confident the boys will do the hard work and we'll see what happens.
BBC: Bristol beat Ayr to reach the British & Irish Cup semis
It is always hard to fund a start-up, but Dr Rodriguez said it was particularly difficult to get investors to buy into the idea of a money-making investment in Africa.
Other associations, such as those hard-coded into a search engine (as opposed to a static link), may be difficult to find without spending a considerable amount of time on a page.
Anytime you use unconventional conventions to tell a story, particularly at a time when pop culture is so self-reflective and it's difficult to find a unique voice, I think you are going to have a hard time selling it to people.
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