It also is possible, again it's just speculation, that population pressure might well be greater in the cities that did the colonizing.

再一次,只是猜测,也很有可能,这些进行殖民的城市,人口压力相对大

耶鲁公开课 - 古希腊历史简介课程节选

It's a small city. It's only 49 square miles, seven hundred thousand people.

这城市不大。只有49平方英里，70万人口。

旧金山的公共交通 - SpeakingMax英语口语达人

If you transfer this ratio to a city like New York City, with 8 million people.

我们不妨用纽约这座,拥有八百万人口的城市来诠释这个比例。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

That is to say, they don't produce food.

换言之,城市人口可以不需要生产食物

耶鲁公开课 - 古希腊历史简介课程节选

So in a town that's the size of new Haven with a population of let's say 100,000 people in just the immediate New Haven area, there might be 20 of these instances of very severe form of polio per year, 20 crippled children would result.

在一个像纽黑文这么大的城市里,大约有十万人口,生活在纽黑文地区的人当中,每年可能就会有二十人,感染到这种急性传染病,可能会导致二十个孩子残疾

耶鲁公开课 - 生物医学工程探索课程节选

You've got people from the outskirts coming in for food and safety; but, the population is slightly over two million people, and that's a lot of mouths to feed.

人们从郊区前往城市寻求食物和庇护,然而人口数量很快突破了二百万,人人都在等米下锅

耶鲁公开课 - 1871年后的法国课程节选

Agricultural villages will have existed all over the place in the late Stone Age, in the Neolithic Period, as it is known. But there is a difference and the critical difference is that a city contains a number of people who do not provide for their own support.

农业村庄在石器时代后期,以及新石器时代随处可见,但二者是有区别的,最重要的区别在于,城市能容纳,相当数量,无需自给自足的人口

耶鲁公开课 - 古希腊历史简介课程节选