我们繁衍得如此之快，以至于人口数量威胁到地球的生态系统。
We are reproducing ourselves at such a rate that our numbers threaten the ecology of the planet.
它的人口数量现在有增长的迹象。
我想告诉你们有关人口数量的过去、现在和未来。那么让我们从一些问题入手。
I want to tell you about the past, present and future of the human population. So let's start with a few problems.
如果没有升级和新的技能力，桥梁、道路和电力系统就无法应对不断增长的人口数量。
Without upgrades and new capacity, bridges, roads and power systems are unable to cope with expanding populations.
土地不断受到人口数量增加所带来的压力，这些增加的人口需要土地提供食物和养料。
Expanding populations are subjecting the land to increasing pressures to provide them with food and fuel.
自20世纪90年代以来，人口专家预测人口数量将增长到90亿，然后增长放慢，甚至可能减少。
Since the 1990s, population experts have predicted the number would grow to nine billion before it begins to slow down and possibly decrease.
结果，广大民众的营养状况得到了极大的改善，人口数量在19世纪早期激增，因此从南欧向北欧的权利转移也得到了延续。
As a result, the nutrition of the general population improved tremendously and population soared in the early 1800s and so the shift of power from southern to northern Europe continued.
但这更多是一个人口数量的反应。
税收会窒息人口数量日益缩小的年轻工人。
Taxes will suffocate the dwindling population of young workers.
我认为这些问题和行为比人口数量更重要。
I think those problems - behaviour - are more important than the size of the population.
下面是十大水资源濒危城市（按人口数量排名）
These are the ten largest cities by population that have the greatest chance of running out of water.
据统计，中国80后一代人口数量已超过2亿。
According to statistics, the population of China's post-80s generation is over 200 million.
要想确定加沙目前的人口数量不是一件容易的事。
Not everyone finds it so easy to identify with Gaza's population.
在那四十年间，勒拿河畔的雅库特人口数量暴跌了70%。
In four decades the population of native Yakuts in the Lena basin collapsed by 70%.
以人口数量角度来说，它只相当于一座小城市的人口数量。
If you are referring to population size, however, that is the size of a small city.
以为的亚洲经济繁荣也得益于该地区劳动适龄人口数量的增长。
Previous Asian booms have been powered by a surge in the working-age population.
可通过普查和调查来估算人口数量，但这无法提供死亡原因信息。
Censuses and surveys can be used to estimate population Numbers, but do not provide information on causes of death.
更好的医疗护理以及更低的死亡率也在推升贫困国家的人口数量。
Better medical care and lower mortality boost poor-country population Numbers too.
显然，地理位置和人口数量不同也是造成各国统计结果不同的原因。
Obviously, some of the differences between countries are caused by differences in their areas and populations.
问题的症结在于处于工作年龄，即15岁到64岁之间的人口数量。
降低购买力平价消费估算值，会大大增加生活在贫困线以下的人口数量。
Reducing PPP consumption estimates drops large Numbers of additional households below the poverty line.
具体谈到人口，当今(1951年)的人口数量是250多年前的四倍。
With specific reference to the population, it is four times greater today [1951] than it was more than 250 years ago.
不到% 1的南方人口数量是犹太人，南方犹太人只占美国犹太人数量的7%。
LESS than 1% of the south's population is Jewish, and southern Jews account for only 7% of American Jewry.
据官方统计，在未来5年里，中国的城市人口数量将会首次赶超农村人口数量。
According to the authorities, in the next five years, China's urban population is going to overtake the rural population for the first time.
由于墨西哥缺乏真正意义上的失业保险制度，贫困人口数量将会继续膨胀。
Since Mexico lacks unemployment insurance, the ranks of its poor are thus expected to swell.
由于墨西哥缺乏真正意义上的失业保险制度，贫困人口数量将会继续膨胀。
Since Mexico lacks unemployment insurance, the ranks of its poor are thus expected to swell.
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