So we've been planting stuff for 11,000 years. And in the measure that we plant stuff, what we learn from agriculture is you've got to deal with pests, you've got to deal with all types of awful things, you've got to cultivate stuff. In the measure that you learn how to use water to cultivate, then you're going to be able to spread beyond the Nile.
人类种植农作物的历史已经有11000年了。 在种植的过程中，我们学会了 如何对付害虫， 还要面对各种各样的麻烦， 培育出新的作物。了解到 如何用水来灌溉农田后， 你还要能够把尼罗河水抽取上来。