One school that keeps records of false claims says that the practice dates back at least to the turn of the century—that's when they began keeping records, anyhow.

一所保存虚假声明记录的学校说，这种做法至少可以追溯到世纪之交——不管怎么说，那是他们开始保存记录的时候。

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In practice, establishing a market for these permits will increase the cost of using carbon-based energy (especially electricity from coal), which will in turn reduce demand.

实际上，建立许可证市场将增加基于碳的能源成本(特别是煤电)，进而导致需求减少。

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With practice you will also be able to turn your head to look at some different part of the aura without it disappearing. This will help you see current illnesses or potential diseases in the body.

通过练习，你还可以扭头，称它还没有消失的时候，从不同的角度观看它的其他部分。

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Microsoft is not quoting standby times, but the best practice is to turn the tablet fully off if you will be traveling.

FORBES: Why You Want The Microsoft Surface Pro (And Why You Don't)

And even if his policies on Iraq and the Middle East turn out to be much the same in practice as Mr Bush's, Mr Kerry would enjoy the benefit of the doubt at least during those crucial months between the American election and the British one expected in May.

ECONOMIST: Bagehot

But how did an obsession of Western policymakers turn into the widespread practice of destroying female fetuses in Asia?

ECONOMIST: Sex selection: Cat got your tongue? | The