On a conservative estimate, food-price rises may reduce the spending power of the urban poor and country people who buy their own food by 20% (in some regions, prices are rising by far more).

保守的估计，粮食价格的上涨将城市的贫穷人口与农村人口的购买力减少20%(在一些地区，价格上涨更高)。

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The resulting estimate for wind speed in a particular location can then be converted into an estimate of electricity generation using a power curve, based on the capabilities of specific turbines.

通过建立在特定涡轮机上的功率曲线，这种特定位置风速的预估结果，就可以被转化成电流产生量的评估值。

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The most obvious method to estimate power usage is to use CPU load as an indicator.

评估电量使用的最显而易见的方法就是将CPU负荷作为一个指示器。

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The 160 turbines on the windfarm will be capable of generating 576MW of power, and the developers estimate that it will produce the energy equivalent to the annual needs of about 400, 000 homes.

BBC: £19m Gwynt y Môr wind farm cash for north Wales over 25 years

"Desalination requires a lot of power ... we estimate that about four tonnes of carbon are emitted per million gallons of freshwater produced here, " he says, with reference to the energy-intensive process of removing salt from seawater (see factbox).

CNN: Counting the carbon cost of bringing water to the desert

Power and Associates weighed in with a February 2013 SAAR estimate of 15.2 million.

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