Gave way to the most productive varieties and the easiest to transport. 被更高产的变种且方便运输的产物取代
Crops adapted to soils and climates... 顺应土质和气候的庄稼
The new agriculture abolished the dependence on soils and seasons. 新农业解除了对土壤和季节的依赖
Soil, plants, animals, rivers and oceans. 土壤 植物 动物 河流和海洋
Bad harvests and famine became a distant memory. 歉收与饥荒成为遥远的回忆
The expansion of cultivated land and single-crop farming... 耕地的扩张和单一作物种植
Here, and in all other industrialized nations, 在这里 和所有其他工业化国家
America was the first to discover, exploit and harness... 美国第一个发现 开采 并掌握了