Over the past century, human use of fresh water has increased at more than double the rate of population growth.

在过去的一个世纪里，人类对淡水的使用以超过人口增长率两倍的速度增长。

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Over the past decade, prices leaped by more than double the inflation rate.

在过去的十年里，物价的上涨速度是通货膨胀率的两倍多。

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One Gallup poll found that 20 percent of Americans, who have been unemployed for at least a year report having depression, double the rate for working Americans.

一项盖洛普民意调查发现：在失业至少一年的美国人中，有20%的人都存在抑郁的情况，这一比率是在职美国人的两倍。

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"He is at 50 or below in most surveys, and that is mainly because of the economy, which continues to be stubbornly weak, the unemployment rate is very high and still in double-digits, and as a consequence Obama does not have much margin for error,".

VOA: standard.2010.01.06

During production surges, workers may put in another 10 hours of weekend overtime, for which they get double-rate pay.

FORBES: Apple And Foxconn Are The Best Thing That's Ever Happened To Chinese Labour

He said Microsoft can grow revenues at a double-digit rate for the '09 fiscal year--outpacing the growth of the worldwide software industry.

FORBES: Microsoft's Cannibal Sacrifice

You know, if you have almost one out of five men in certain communities that are out of work - and that's double the rate for white men or more than double the rate - you would think that would make news.

NPR: 12 min 17 sec