It must also be difficult to separate the disease burden of obesity from the figures.
It is difficult to separate sour feeling from sober analysis in Mr Besson's partial text.
But now it has become more and more difficult to separate myself from the daily news stream.
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Robbins admitted that it can be difficult to separate the paintings from the man who created them.
As often happens in the U.S., however, it may be difficult to separate national interests from commercial interests.
The remains of the dead were too difficult to separate and identify.
Likewise, once these rules go into effect, any woman considering divorce will find it more difficult to separate credit card accounts and establish credit on her own.
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Because it has gotten more difficult to separate work from home, "I really need the mental break of vacation, that feeling of, 'I'm out of here, '" Deboo says.
It is difficult to separate out fact from fiction, sin from expiation, punishment from reward when we are so muddled about the facts and so ready to believe almost anything.
Forecasts of losses from a unique event such as the royal wedding are tough to make accurately because it is difficult to separate out the holiday's influence from other economic trends.
With work and personal life integrated into smartphones -- and messages from your boss just one click away from a map of your destination -- it's difficult to separate the two, Uzzi says.
It may be difficult or even impossible to separate out all of the multiple levels of horror, all the losses that can never be made up.
It forced Obama to do something unusual and difficult for a candidate: he needed to separate politics and governance in the midst of a political campaign in which there was often no distinction.
Cost savings through scale are difficult when planes are tied to separate maintenance schedules and pilots need to be taken out of the productive loop for three months for retraining.
Lots of corporations are still sectioning off digital and social media functions as separate units, making it more difficult to tie their work back to the bigger-picture strategy of the organization.
If you skip them entirely, securing those key business assets from your partner may prove difficult should he or she react poorly to your decision to separate, Mr. McCusker adds.
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Because we really have three separate problems, each on its own very difficult to solve.
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Professor Jeremy Keenan of the School of Oriental and African Studies in London says it's difficult to know how many people the MNLA has under arms and to separate its core force from hangers-on.
The glaciers are retreating and if the separate colonies are allowed to mingle, eradication will become much more difficult.
And the costs and revenues of once-separate businesses have a nasty habit of getting tangled up, which makes it more difficult to judge the true profitability of each.
While many of these sites provide taxpayers with valuable services and information, this proliferation of separate websites creates unnecessary confusion and inefficiency, wastes taxpayer dollars, and makes it difficult for the public to find important government information and resources.
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