Imagine you supply the world's biggest supermarket chains with breakfast cereals, bottled beer and sliced bread. Or that you are one of the world's biggest meat producers, buying corn to feed cattle whose meat is your bottom line.
想像一下你爲一些全球最大的連鎖超市供應早餐穀物、瓶裝啤酒和切片面包,或者你是全球最大的肉類生產商之一,你購買玉米餵養牲口,然後從賣肉中獲取利潤。
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