有人认为，一旦狩猎采集者占领了整个世界，世界各地的人口就会开始增长，食物将变得稀缺；农业本来是解决这一问题的方法。

It was argued that once hunter-gatherers had occupied the whole world, the population started to grow everywhere and food became scarce; agriculture would have been a solution to this problem.

youdao

世界的本来面目是什么样的？

What the world originally looked like?

youdao

战略环境——世界本来的样子。

The Strategic environment-the World as It is.

youdao

It's really an entry into the other world, and you gonna step through it and become a part of the other world which not necessarily you can see it.

就是进入另一个世界的入口，你可以穿过这扇门,成为这个世界的一部分,而你本来可能不那么轻易获得的。

普林斯顿公开课 - 人性课程节选