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。
This allows Costa Rica to use its female population more productively than is true in most of the region.
这使得哥斯达黎比其他地区更有成效地利用其女性人口。
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。
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
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
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