when it happens right about this period.

当它恰恰发生在这个时期
You can imagine that this can

你可以想象得出这种变革
only happen gradually; none of this happens overnight.

只能缓慢的进行并不能一蹴而就
But if you think of the time span about 900 to 700 B.C.,

但是如果你发现它发生在
that is, when these changes are taking place.

大约公元前900年到700年之间时
I would have guessed at an increasing pace

我猜想它具有极大的跨越性
as you go further down the road.

在你继续深入研究下去之后
Then what happens is the population grows,

然后你会发现人口在急剧的增长
and for this the archaeological evidence is very strong.

有很多考古证据都可以有力的证实这一点
There are getting to be more and more people living on the land of Greece.

越来越多的人生存在希腊这片土地上
What do they do? One of the problems that it

他们都干些什么呢其中一个问题是
produces is the more people you have,

人越多产出就越大