Half of US population breathe polluted air.
美国有一半以上的人口呼吸污染空气。
The same proportion of the US population now would be six million deaths.
同样的死亡比例在现在的美国人口中则达到6百万。
This is about double the estimated percent of the US population that are here illegally.
这是美国非法人口估计百分比的2倍。
That should help us determine how to prevent further decline in the population.
这将有助于我们确定如何防止人口的进一步下降。
As our population grew, there were not enough numbers for us to use.
随着人口的增长，没有足够的数字供我们使用。
Understanding population differences can help us understand our history.
了解群体差异能帮助我们了解我们的进化历史。
As is known to us all, China has largest population in the world.
我们大家都知道中国人口最多。
As is known to us all, China has largest population in the world.
我们大家都知道中国人口最多。
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