But over several generations, genetic change can help some populations evolve into city slickers.

不过数代的基因变异能帮助一些物种适应城市的环境。

And this is another city slicker animal.

这是另一种城市滑头动物。

One breeder said it's to show the city slickers in Paris that there's a large economy that depends on farming in the mountains.

一位饲养员说，这是为了向巴黎的城里人展示，在山区，依然有一个依赖于农业发展的庞大经济体。

Bizarre as the concept of a poop god sounds to us 21st century city slickers, the Romans may not have understood why poop made such an effective fertilizer.

对我们这些21世纪的城市人来说粪神这个概念听上去很奇怪，罗马人可能不理解为什么粪便能作为肥料。