第一.
nutrition 名词
/ njutrn; US nu?-; nuˋtr?n/ n [U]
(process of giving and receiving) nourishment; food 营养; 滋养; 食物: adequate nutrition of the body 身体需要的充足的营养 * This food provides all the nutrition your dog needs. 本食品含有狗所必需的一切营养.
the study of human diet 营养学: a number of books on nutrition 若干本营养学的书.
第二.
nutritional / -nl; -n?l/ 形容词
adj: the nutritional value of a food 某种食物的营养价值.
第三.nutrient 可以是名词,也可以是形容词
/ ?nju?trnt; US ?nu?-; ˋnutrnt/ n, adj (fml 文) (substance) serving as or providing nourishment, esp for plants or animals 营养的, 滋养的（物质）: Plants draw minerals and other nutrients from the soil. 植物从泥土中吸收矿物质和其他养料.
都来自牛津高阶