他们从未提及农场和工厂生产食物所需要的燃料，以及所释放的二氧化碳。
They never refer to the fuel that farms and factories require to produce the food, and the carbon dioxide that releases.
吉本斯解释：“这就像一个不需要淀粉或者纤维素就能生产出生物燃料分子的小型工厂。”
"They are like little factories that spit out biofuel molecules without the need for starch or cellulose, " explains Gibbons.
新技术 - 包括节约劳动力的发明，工厂生产，化石燃料驱动的发动机 - 在西欧的其他国家传播着，之后到了美洲。
The new technologies—labour-saving inventions, factory production, engines powered by fossil fuels—spread to other parts of western Europe and later to America.
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