The world's population more than doubled from 3 billion between 1961 and 2007.

1961年世界人口为30亿，到2007年翻了一番多。

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Its population more than tripled between 1900 and 1960; its relative weight within North America also increased.

从1900年到1960年，该省人口翻了三番多，在北美的分量也有所上升。

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Between 1000 and 1300 Europe's urban population more than doubled, to about 70m (thanks partly to a new system of crop rotation, made possible by better tools).

公元1000年和1300年间，欧洲城市人口翻了一倍多，达到7千万人(与改良工具后人们运行了新式的轮作系统有关)。

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The number of Washingtonians grew about three percent during that period while the United States population increased more than seven percent.

VOA: special.2009.03.20

Some people in the population are more biologically vulnerable than others, and the Pimas appear to be one of those groups.

人群中有一些群体,在生物学上处于弱势,皮玛族就是其中之一

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Could I do more for the ultimate good of the slave population by holding or emancipating what I own?

我是否可以为奴隶的最终利益做的更多,是继续拥有他们,还是解放他们呢

耶鲁公开课 - 美国内战与重建课程节选

The U.S. has nine cities with a population more than one million, China has 107.

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Festivities greeted visitors in Canterbury, whose 35, 000 population more than doubled temporarily.

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America isn't a country united by ethnicity the way, say, Japan is, the way France used to be before immigrants from former colonies made its population more diverse.

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