脂肪单位体重的卡路里含量是蛋白质和碳水化合物的两倍，因此，有最能维持生存的价值。

Fat has twice the calories per unit weight than protein or carbohydrate sugar has, as a consequence, has the greatest survival value.

youdao

他指出，光是维持美国现有的作战单位，每年都会比前一年多花费2% - 3%，而每年预算的增长率却仅为1% - 2%。

Just to keep up America's existing combat units, he notes, costs 2-3% more each year. But the annual budget is rising by only 1-2%.

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由商展主办单位“环球资源”针对超过300名出口商所做的调查显示，大部分的厂商将维持约15%或更少的涨幅。

A survey of more than 300 exporters by trade show organizer Global Sources showed most will keep increases at five percent or below.

youdao

I do want to talk about one important subject which you might not have thought too much about and that's lipids, because lipids are so important to the structure of the body because they make up the membranes that form the cells that are the fundamental units.

我的确想要讨论一个重要的主题,这个主题也许你们都没有深入思考过,那就是关于脂类的问题,脂类对身体结构形成十分重要,它是组成细胞膜的基本单位,而细胞膜能够维持细胞形态

耶鲁公开课 - 生物医学工程探索课程节选