America was the first to discover, exploit and harness...

美国第一个发现开采并掌握了
The phenomenal revolutionary power of black gold.

黑色黄金非凡的革命性能量
With its help,

因此
A country of farmers became a country of agricultural industrialists.

农业国家变成了机械化农业国家
Machines replaced men.

机器代替了人力
A liter of oil generates as much energy...

一升石油产生的能量
As 100 pairs of hands in 24 hours,

相当于100双手劳作24小时
But worldwide only three percent of farmers have use of a tractor.

但是世界上仅百分之三的农民使用拖拉机
Nonetheless, their output dominates the planet.

尽管如此他们的产出在地球上占多数
In the united states, only three million farmers are left.

在美国只剩三百万农民
They produce enough grain to feed two billion people.

他们生产的粮食可以养活20亿人
But most of that grain is not used to feed people.

但大多数粮食没有用来养活人口