America was the first to discover, exploit and harness... 美国第一个发现 开采 并掌握了

317. Electricity resulted in the invention of elevators,
     电力导致电梯的发明
318. Which in turn permitted the invention of skyscrapers.
     电梯又促使了摩天楼的发明
319. New York ranks as the 16th-largest economy in the world.
     纽约经济是世界第16强
320. America was the first to discover, exploit and harness...
     美国第一个发现 开采 并掌握了
321. The phenomenal revolutionary power of black gold.
     黑色黄金非凡的革命性能量
322. With its help,
     因此
323. A country of farmers became a country of agricultural industrialists.
     农业国家变成了机械化农业国家

来自《家园 第一部分 Home Part1》第 320 行