美国人摄入了更多热量，他们或许会放弃一些含盐量更高的食品，好让总食盐消耗量维持正常水平。

As Americans ate more calories, they could have eased up on some of the saltier choices so that their overall sodium consumption remained constant.

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事实上，人体可摄取食物中大部分的热量，消化它们只需要消耗摄入总热量的10%。

In fact, the digestive process typically only accounts for around 10% of most caloric in-take.

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“你要无视局部而去关注总的热量消耗，后者最终决定了你所能减掉的脂肪量，”Fitzgerald说。

"You can ignore zones and pay attention to how many calories you burn, which ultimately determines how much body fat you're going to lose," Fitzgerald said.

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