What happened in agriculture? Well, if you take agriculture over a century, agriculture in about 1900 would have been recognizable to somebody planting a thousand years earlier. Yeah, the plows look different. The machines were tractors or stuff instead of mules, but the farmer would have understood: this is what the guy's doing, this is why he's doing it, this is where he's going. What really started to change in agriculture is when
农业发生了怎样的变化？如果你回头看 一个世纪以前的农业， 1900年的农业跟一千年前的 种植方法没有很大的区别。是的，看起来，犁的样子 有些不同。人们用上了拖拉机等机械 而不是骡子，但是农民们 知道，这仍是人在操作， 他还是要这么做，没什么太大的不同。 农业真正开始改变