联邦航空局认为，将货机飞行员也包括在内，将会增加实施这些变革的成本。货机是航空业的一大组成部分。

FAA determined that including pilots who fly cargo planes—a large segment of the aviation industry—would add too much to the cost of implementing the changes.

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农民们也希望变革。

Farmers want change too.

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这项变革也冲击了传统商行。

The revolution also hit the traditional business houses.

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It's happened over the course of millions of years of human evolution, but it's happened also in a relatively recent time frame when we think about the American diet and what people are eating, but also the world diet of course.

它们发生在人类数百万年的演化历程中,在近现代,当我们考虑美国人的食谱,当然也包括全世界的食谱,同样在发生着这些变革

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选