It's very important because it provides-- does provide energy but it helps with muscle building and with the manufacturing the body does of its own proteins, and therefore, is a vital part of the diet.

蛋白质非常重要,因为它能提供,的确能提供能量,但它也能帮助肌肉塑形,参与身体内自身蛋白的合成,因此是饮食中不可或缺的组成部分

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Gram for gram it provides a lot more punch in terms of calories than protein or carbohydrate, and that could be why fat has such an appeal to human physiology and why people like high fat foods.

每克脂肪比蛋白质或碳水化合物,提供更多卡路里的热量,这是人类身体对脂肪如此渴求的原因,人们为什么如此喜欢高脂食物

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选