We have reserves that can scale us up to large numbers.

我们还有预备军人， 能使备战人口大量增加。

This massive scale and growing populous necessitated advancements in Roman engineering.

帝国规模庞大，人口不断增加，需要罗马工程进一步发展。

And one of the key challenges I see is as we're just talking about, your first question, you know, when the cities become bigger, when there is more population, everyone wants a very good quality lifestyle.

我认为现今一个主要的挑战就是，正你第一个问题所提到的，随着城市规模的变大人口的增加，何来保证每个人都有舒适的生活环境。

Sorry to break it to you, but with increasing populations and climate change pandemics are likely to become more frequent, which means that this kind of social distancing might become the new norm.

很抱歉打断你的计划，但随着人口的增加和气候的变化大流行病可能变得越来越频繁，这意味着保持社交距离或成为新的常规。

Where will humans find me when there are billions more of them around?

人口再增加几十亿，人类还能找到我吗？

Between now and 2050, the urban population of Africa could triple.

从现在到 2050 年，非洲城镇人口可能增加两倍。

Population growth has fueled an increase in fishing because of rising demand.

由于需求的增加，人口的增长推动了捕鱼业的发展。

There's no population to fund pensions and health care as demand from the aging population rises, Japan's Prime Minister, Fumio Kishida, warned citizens that the country is on the brink of not being able to maintain social functions.

随着老龄化人口需求的增加，没有人口来为养老金和医疗保健提供资金，日本首相岸田雄向国民发出警示，日本已经很难维持社的运转。

But recently some scientists, especially in the west, have been focusing on another issue: the increasing number of people in the world, something known as overpopulation.

但最近一些科学家，尤其是西方的科学家，一直在关注另一个问题：世界人口不断增加，也就是所谓的人口过剩。

Now Kyung Lah looks at how a rise in obesity in Japan has the government there and employers looking for new ways to get workers back into shape.

景兰的报迫指出毛由于日本肥胖人口增加，所以政府和老板正在寻找新方法促使员工恢复身材。

This relatively huge increase has caught many demographers by surprise.

这种颇为可观的增加量使得许多人口统计学家感到很惊讶。

In eastern England, for example, where eastern Europeans are increasingly numerous, 38% fume about immigration.

比英格兰东部地区东欧人口迅速增加，38%的人对移民有怨言。

Knowledge is lost, living standards fall, violence increases and often the population declines.

知识丢失，生活水平下降，暴增加，人口数常随着下降。

Its population more than doubles when students arrive.

当学生到来时，它的人口增加了一倍多。

So population would increase, and there would be more people to look after.

所以人口增加，有更多的人需要照顾。

A law has come into force aimed at boosting Iran's population.

一项旨在增加伊朗人口的法律已经生效。

Additionally, cutting waste will reduce hunger that is expected to rise during the coronavirus pandemic.

此外，减少食物浪费将减少饥饿人口，预计在新冠疫情期间饥饿人口将增加。

The UK gets about 500 people added to its population every day.

英国每天约增加五百名人口。

This is a place, all of Europe increases in population.

从此以后 欧洲所有地方的人口都增加了。

In just four generations, our population has grown by 5 billion.

短短四代 人口就增加了五十个亿。