That makes sense, though, because margin and capacity are relational concepts: margin is the difference between your total capacity and how much of that capacity you're using.

尽管如此，让我试着这样说，余地和最大能力是两个相关的概念：余地是你能发挥的最大能力和你所实际运用的能力之间的差额。

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Milk, bread, restrooms - all the essentials - are all in the back of the store, because they’re staples that everyone needs, and relatively low margin.

牛奶那，面包那所有的生活必需品，即使是商场的厕所总是商场的最里面，这些都东西都是每人都要的而且相对都很便宜。

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Still, Maggie Wu, the company's chief financial officer, said that in the near term, revenue from new businesses would reduce the company's profit margin because it was still in building mode.

尽管如此，公司首席财务官武卫表示，在短期内，这些新业务的营收将降低公司的利润率，因为它们仍然处在构建阶段。

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And in this case, because of the small margin that has characterized the race, it's natural for that to take place.

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Last month, rival Bear Stearns, one of the biggest Wall Street firms in the mortgage securities business, disclosed billions of losses in two hedge funds it managed, largely because of subprime mortgage securities that triggered margin calls and redemptions.

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And not all of them came out profitable because of a methodology that inflates operating margin. (The median margin was negative 0.27%.) A given local hospital may have good operations, but not feel profitable because almost every cent of its profit is sent to their parent system for one thing or another.

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