Anyone who wants to better understand the costly economic and political externalities that come with cheap food should spend some time in America’s Midwestern farm country. I did last week, driving from Wisconsin to Missouri through hundreds of miles of corn and soyabeans, the vast majority of which is grown not as food but as feed for cattle.
如果有人想更好地理解廉價食品帶來的昂貴的經濟和政治外部因素，就應該到美國中西部的農場來一段時間。上週，我開車從威斯康辛州到密蘇里州，經過數百英里的玉米和大豆，其中絕大多數不是用來食用的，而是用來喂牛的。
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