Over three-quarters of them by hand. 其中超过四分之三仅靠人力

273. In an almost sacrificial ritual performed over and over.
     一次次劳作 修整了土地
274. Agriculture is still the world's most widespread occupation.
     农业仍是世界上最普遍的职业
275. Half of humankind tills the soil,
     半数的人类耕种土地
276. Over three-quarters of them by hand.
     其中超过四分之三仅靠人力
277. Agriculture is like a tradition handed down...
     农业像是一种传统在汗水和辛苦劳作中
278. From generation to generation in sweat, graft and toil,
     从一代传到下一代
279. Because for humanity it is a prerequisite of survival.
     因为这是人类生存的前提

来自《家园 第一部分 Home Part1》第 276 行