身體從食物裡拿到的東西
這是這個字最實在的一層：一個活著的身體，靠著吃進正確的東西維持下去。
getting proper food · noun · B1
the process of getting or giving the right kind of food so a person or animal stays healthy and grows well.
營養
核心畫面
`nutrition` is not the food on the plate — it is what the body actually gets out of it. Picture the line that runs from a bowl of rice and vegetables, through eating, into a child who grows taller and does not get sick easily. Everything along that line — what goes in, whether it is the right kind, and whether the body ends up with what it needs — is what this word covers.
nutrition 指的不是盤子裡的食物本身，而是身體真正從食物裡「拿到」的東西。可以想成一條線：一碗飯和青菜、吃下…更多收起
nutrition 指的不是盤子裡的食物本身，而是身體真正從食物裡「拿到」的東西。可以想成一條線：一碗飯和青菜、吃下去、然後是一個長高了、也比較不容易生病的孩子。這條線上的每一段——吃進什麼、吃得對不對、身體最後有沒有拿到它需要的——都在這個字的範圍裡。所以英文說 good nutrition、poor nutrition，講的是「這條線順不順」，中文的「營養」也一樣：說一個人「營養不夠」，講的不是他碗裡的東西，是他身體拿到的量。Two branches
把這件事變成一門學問
同一件事被搬進教室和實驗室。原本是身體裡默默發生的過程，現在有人拿它當研究對象，一項一項量、一項一項比。
the science of food · noun · B2
the science that studies how food, vitamins, and other things in what we eat affect people's health.
營養學
原始詞典資料3 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
nutritionnoun/njuːˈtɹɪʃ.ən/
- 1
biologynatural-sciencesThe organic process by which an organism assimilates food and uses it for growth and maintenance.
- In the dead state all is apparently without motion. No agent within indicates design, intelligence, or foresight: there is no respiration; no digestion, circulation, or nutrition; […]
- Proper nutrition – and even more important, proper hydration – is crucial in preventing and recovering from both fevers and colds.
- 2
The academic discipline around the scientific study of this process.
- 3
That which nourishes; nutriment.
- I accidentally ate a worm which was in my apple - my uncle said the extra nutrition would do me good.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。