Many of them will help you cut 100 calories or more from a single serving.

它们中的很多会帮你减去100卡路里或者更多。

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This delivers a single serving of product without the use of gas or chemical chargers.

这提供了一个单一的服务产品，而无需使用天然气或化学充电器。

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Problem is, many still contain more salt than the 140 mg most of us should get in a single serving.

问题是在于，很多食品仍旧含有多于我们大部分人一份该摄入的140毫克的食盐量。

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The urge to eat to the bottom of a bag appears to wane when a package is so large it is clearly not a single serving size, Dr. Geier says.

WSJ: Overeating: The Psychology of Small Packages

You would be hard pressed to ever use a whole teaspoon of salt on a single serving of food or to get that many grams of fat onto your salad.

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No, if we're looking for dining pleasures, we'll have to content ourselves with one serving of salted nuts a week and a single measly serving of potato chips.

WSJ: Moving Targets: Joe Queenan on the Mediterranean Diet