I mean take the question of East Asia: Japan, Korea, China, etc. a third of the world's population lives there, now the largest economic region in the world.

我们来谈谈东亚的问题。东亚：日本，韩国，中国等等——世界上三分之一人口住在那边，现在是全球最大的经济区域。

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Britain places a disappointing 26th, down four places from a year ago, reflecting in particular a relatively low mean number of years of schooling for its population.

英国排在令人失望的第26位，比一年前下降4位，相对应的尤其是其人口的一个相对较低的受教育时间。

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The discovery of such a large gibbon population may mean the species has a better chance of long-term survival, the scientists say.

科学家表示，发现数量如此之多的长臂猿意味着这个种群有更好的机会长时间存活。

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We can define it in a couple of different ways depending on whether we're talking about sample mean or population mean.

我们有几种不同的方式去定义这个概念,取决于我们指的是,样本均值还是总体均值

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Well, a cross-sectional study would mean that you'd get a random group of the population and measure them in 1970 and then take another random group five years later and measure them, but it wouldn't be the same people necessarily, it would be different groups of people.

那么,横断面研究就是,1970年你在人群中随意选择一组人,并记录下相关数据,然后,五年后再随意选择一组人记录数据,但这不需要是同一组人,通常是不同的人

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But there is also economic sense to it, as opening these top positions up to the other half of the population will mean an even more talented slate of candidates to choose from, making sure the best and brightest are better and brighter.

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It would mean by 2050, Britain would have a population of nearly 72.4 million - overtaking Germany, whose population is projected to fall sharply over the period, as Europe's largest country.

BBC: Britain 'biggest in EU by 2050'

Here, the heroine of the previous films, Ripley (Sigourney Weaver), crash-lands on a godforsaken planet whose population consists of a couple of dozen mean-looking convicts running some sort of dilapidated foundry.

NEWYORKER: Alien 3