The science is well known, but practical energy effective devices are in short supply.
This approach for the most part kept consumer prices down, but practical problems have long been clear.
Stylish but practical, she shops at stores like Target and Banana Republic.
The reason is not theoretical (it being hard to understand why the one unelected branch should be supreme over the other two) but practical.
It might be a while before stylists and cold-weather dandies renounce traditional layering, but more practical-minded types seem to be gravitating toward the single but versatile piece of outerwear.
But the practical, stability-preserving, tests of Mr Bush's missile-defence plans are yet to come.
But in practical terms, the squeeze on NHS finances is greater than people realise.
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But in practical terms, he needs to move quickly to advance his domestic agenda.
But in practical terms how does a team make its car go faster?
But the practical question is whether the investigation can continue - or will it only hit a dead end?
The Third Home Rule Bill became law, but its practical introduction was suspended until after the end of hostilities.
Pegging to the dollar rather than gold may not seem like the same thing, but the practical impact is identical.
Another change involves teacher training, which used to focus on educational theory but ignore practical techniques for keeping order in class.
SnapStream's 11-tuner performance art piece looked fun too, but not practical.
Lots of big scientific names are working in synthetic biology, which so far has produced lots of hype and headlines but few practical breakthroughs.
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But in practical terms, a chip's vulnerability often stems from the fact that it can be taken apart and probed at a hacker's leisure.
It has been said that it takes a village to raise a child, but in practical terms, it has taken taxpayers, to some extent.
"We love having all this stuff around, but for practical reasons we have to pare it down, " said ACE executive director Don Fleming, who's overseeing the sale.
But a practical view of the situation requires traffic analysis.
The moral and legal dimensions of controlling intellectual property have been well explored in the past weeks leading up to the protest yesterday, but the practical dimension has been largely overlooked.
He said he wants the public to respond to the opportunity of the Green Deal but the practical effect of this consultation would put people off and make them less enthusiastic.
Ukraine and Georgia have been promised membership eventually but in practical terms that would create a new crisis with Russia and the issue might be left hanging for a number of years.
It's a career that has given her not only a sweeping overview of the American judicial system, but a practical understanding of how the law works in the everyday lives of the American people.
While some pay-TV executives say that full "a la carte'" could be overwhelming for viewers, others say that such an offering would be "the dream" but not practical, considering the reality of relationships with entertainment companies.
Regarding the refugee question, the head of the Palestinian delegation said there has been considerable progress not only on the question of how to take historic responsibility for the refugee question, but also practical aspects of resolving it.
"We won't see such garments in stores for another 20 or 30 years, but the practical and creative possibilities are exciting, " said Prof Joanna Berzowska, of the Department of Design and Computation Arts at Concordia University in Montreal, Canada.
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