They learned to adapt the grains that are the yeast of life... 他们学会了在不同的土壤和气候下

259. Humans harnessed the energy of animal species and plant life,
     人类驾驭了动物的力量以及植物的生命
260. From which they at last extracted the profits.
     并最终榨取出利益
261. The memory of thousands of years scrabbling for food faded.
     数千年来挣扎求食的记忆已经淡去
262. They learned to adapt the grains that are the yeast of life...
     他们学会了在不同的土壤和气候下
263. To different soils and climates.
     种植赖以生存的谷物
264. They learned to increase the yield and multiply the number of varieties.
     他们学会了提高产量 种植多样化
265. Like every species on earth,
     像地球上所有物种一样

来自《家园 第一部分 Home Part1》第 262 行