Since African agriculture is still broadly unproductive, food is imported, consuming a portion of revenue.

由于非洲的农业仍然普遍缺乏生产力，所以粮食需要进口，消耗了一部分收入。

youdao

We get a fairly large portion of calories from fast food and snacks.

我们从快餐和零食中摄取相当大部分的卡路里。

youdao

They are. But the fact is that food now makes up a smaller portion of household expenditure than ever before.

然而实际情况是，食品占家庭支出的比率比从前任何时候都少。

youdao

And also, as I'll discuss in a minute, a lot of people don't recognize what a portion is, and because the food industry has been very successful at recalibrating us to think about what's acceptable to eat in one sitting at one time, and because of that our notions of portions have been thrown way off.

同时,马上我要讲到,很多人不知道摄入量是什么,因为食品业,成功的重塑了我们,就坐用餐时关于什么东西是可食用的看法,而这使我们对摄入量这个概念,有了不同看法

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But the calculations are based on a 100g-portion of the food, so condiments such as Marmite and ketchup, which are never consumed in such large quantities, are out.

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Lower income households across the United States spend a larger portion of their income on food than higher income households.

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Many patients opt for less-aggressive surgical approaches, including an adjustable gastric band (which can be reversed) that forms a pouch in the stomach, or a sleeve gastrectomy, in which a portion of the stomach is removed, leaving a tube for food to pass through.

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