However, studies that focused on a single target food or nutrient may have overestimated the impact of taxes by failing to take into account shifts in consumption to other foods.

但是，以单一食品或营养为目标的研究可能过分估计了税的影响，而没有考虑到消费品的替代作用。

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Add a food to the diet and you are adding other substances besides the nutrient you are interested in.

如果把一种食物加入到饮食结构中去，那么你不但加入了你感兴趣的营养素，你同时还加入了一些其他物质。

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Ocean ecosystems are beset by changes in nutrient levels due to run off near the coasts and by overfishing, which plays havoc with food webs nearly everywhere.

由于沿岸的营养流失和过度捕捞，海洋生态系统遭受由于海岸带侵蚀造成的水体营养水平改变，还有过度捕捞，也极大破坏了几乎全球各地的食物网。

youdao

And if food is anything you eat, it gives you a nutrient, then basically everything satisfies the criteria for food; not everything in the world, but most things would.

若不论吃什么,只要提供营养就是食物,那基本上没有什么不满足食物的定义,倒不是说一切东西,至少绝大部分都满足

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Living in a zero-gravity environment poses risk of nutrient deficiency and bone loss, so keeping close tabs on food intake in space is crucial.

FORBES: NASA Asks The 'Crowd' To Help Track What Astronauts Eat

Any food with a lot of fat is going to increase the calories and, in essence, make the food less nutrient dense.

CNN: Get the biggest bang for your calorie with nutrient-dense food

And it has just got longer, with the addition of omega-3 fatty acids, found in fish, which have made the transition from health-food fad to vital nutrient with amazing speed.

ECONOMIST: In praise of omega-3s