Population size depends on two key factors.

人口数量取决于两个关键因素。

Population size recovered within 2 centuries, and just 2 centuries later, the Industrial Revolution began.

人口数在两个世纪里就恢复了，又过了两个世纪之后，工业革命开始了。

However, some population sizes will increase.

然而，一些物种规模将会增加。

The representatives are divided among the 50 states based on population size.

代表们是根据人50个州的人口规模划分。

The researchers found that population sizes had declined by 69 percent on average.

研究人员发现，种群规模平均下降了69%。

" With such small population sizes, we were expecting much higher inbreeding, " he said.

" 在如此小的种群规模下，我们还以为近亲繁殖水平会高得多。"

Terry said wildlife population sizes continue to decrease at a rate of about 2.5 percent per year.

特里说野生动物的数量继续以每年2。5%的速度减少。

Between 1800 and 2015, population size had increased sevenfold, while humanity was consuming 25 times more energy.

从 1800年到 2015 年，全球人口数翻了 7 倍，而人类消耗的能量增加了 25 倍。

The National Development and Reform Commission says the census is critical to understanding the population size, structure and distribution.

国家发展和改革委员会表示，人口普查对了解人口规模、结构和分布情况至关重要。

The capital of Lesvos is Mytilene, a surprisingly lively port city considering its population size of around 30,000 people.

米蒂利尼是莱斯沃斯的省会城市，是一个非常繁华的港口城市，尽管这个城市的人口只有3万。

" Rarely do we think about how an animal's behavior and social structure can influence population size, " Bergl said.

" 我们很少会想到动物的行为和社会结构如何影响种群的数量，" 伯格说道。

Those sightings are then analyzed for interesting patterns, such as changes in species or long- term trends in population sizes.

然后，对这些发现进行分析，寻找有趣的现象，如物种变化或种群大小的长期趋势。

And since smaller bodies can hold fewer eggs, they result in fewer offspring, and a lower population size in the long run.

由于体型越小，它们的卵子就越少，后代也就越少，从长远来看，其种群规模也就越小。

As migration swells the population of rich places, their long-run dominance is assured because of the link between population size and innovation.

随着移民涌入富裕国家，由于人口规模和创新之间的关系，他们的长期优势得到了保证。

Each region would have a population size of around a million people.

每个地区的人口规模约为 100 万人。

Unlike what will likely happen if we kept our current population size.

与如果我们保持当前的人口规模可能会发生的情况不同。

Whether you`re talking about population size or size in square miles, no continent comes close to Asia.

无论你是在谈论人口规模还是平方英里规模，没有一个大陆能与亚洲相提并论。

These salamanders are still considered to be vulnerable, because of their small population size and limited range.

这些蝾螈仍然被认为是脆弱的， 因为它们的种群规模小，范围有限。

Every state based on population size, based on a few other things has a certain number of electors.

每个基于人口规模和其他一些因素的州都有一定数量的选民。

Each new town will have a population size of around 150,000 to 200,000, occasionally up to 300,000 people.

每个新城镇的人口规模约为 150,000 至 200,000，偶尔会达到 300,000。