Now, beyond table scraps, store-bought dog food is nearly impossible to distinguish from human food.
"I can't distinguish Guardiola from Barcelona, but I certainly can distinguish Mourinho from the clubs he's managed, " Szymanski said.
This radiation can be detected although Dyson spheres remain difficult to distinguish from natural astronomical objects that give off similar signatures.
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More difficult are the phishing attempts that direct users to spoof sites that can be difficult to distinguish from the real thing.
But that effect is difficult to distinguish from the industry's broader decline.
Because hardship from globalisation is so difficult to distinguish from hardship in general, it would be open season to put up trade barriers in industry after industry.
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However, it is not yet clear how the rule will be applied or how it will prevent some types of proprietary trading that are difficult to distinguish from market-making.
Many accounting and consulting firms, for example, find themselves stumped when choosing from applicant pools full of highly impressive candidates who are hard to distinguish from one from another based on traditional metrics.
Outside these core areas, and at lower altitudes, the culture and farming practices of mountain people can have profound effects on local ecology, making the effects of climate change difficult to distinguish from those directly due to human activities.
Tension headaches can sometimes be difficult to distinguish from migraines, but unlike some forms of migraine, tension headache usually isn't associated with visual disturbances (blind spots or flashing lights), nausea, vomiting, abdominal pain, weakness or numbness on one side of the body, or slurred speech.
This would explain why the Romney campaign has chosen to attempt to distinguish the report from their plan (although there little to distinguish the Romney-Ryan Medicare plan from the model studied by Kaiser) rather than attack the findings of the Kaiser Family Foundation report.
Located outside of Shanghai, Suzhou was looking to distinguish itself from its larger-than-life neighboring city.
At the same time, he sought to distinguish himself from Obama on some specific issues.
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The two MLAs distinguish themselves from Alliance by pointing out they are pro-Union and pro-opposition.
But using software that imitates a dolphin's brain may not distinguish DolphinSearch from its competitors.
They distinguish themselves from the other unionists by their opposition to flag waving and unity candidates.
If all passengers are using the same facilities, how can airlines distinguish themselves from their rivals?
So with BMI, Schwarzenegger would be obese, because BMI does not distinguish muscle from fat.
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Labels like these can distinguish you from the pack, and may even open up opportunities for you.
As counterfeiters rush to replicate a brand, the brand owners fight to distinguish themselves from the fakes.
He recently added canonical tags to his website, which help search engines distinguish original from duplicated content.
For another, Mr Gore does have personal interests, and personal quirks, that distinguish him from the president.
Today, your brand story is how you distinguish yourself from the storm of information overload and attention deficit.
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This, among other things, helps it to distinguish bacteria from human membranes, which have a less negative charge.
Retailers are trying to distinguish themselves from each other through better customer service, product assortments and advanced technology.
Is PETA even aware that most viewers of the show tune in to distinguish themselves from the cast members?
As it advances into the Tiger's last domain, the army must be careful to distinguish civilians from rebel fighters.
As Kobo's CEO told us, it's with social features that the company expects to distinguish itself from the competition.
They were dressed in blue coveralls and red sandals to distinguish them from the other suspects being brought to court.
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