RDA is a food-and-health figure: how much of a nutrient — a vitamin, a mineral, protein, and so on — a typical person is advised to take in over one day. You see it on the side of a vitamin bottle, in a school health book, or on a diet chart.

RDA RDA is是 a food-and-health figure一個跟食物和健康有關的數字: how much of a nutrient一種營養素的量 — a vitamin, a mineral, protein, and so on維生素、礦物質、蛋白質等等 — a typical person一般人 is advised被建議 to take in攝取 over one day在一天裡。You你 see it會看到它 on the side of a vitamin bottle在維他命瓶子的側面, in a school health book在學校健康教育課本裡, or or者 on a diet chart在飲食圖表上。

The letters come from Recommended Dietary Allowance, a US scientific name. Though actually, teachers, nurses, and packet designers very often say Recommended Daily Allowance instead, because daily is the word people already have. Both expansions point to the same kind of number; dietary is the older official one.

The letters這幾個字母 come from來自 Recommended Dietary Allowance Recommended Dietary Allowance, a US scientific name一個美國的科學名稱。Though actually不過其實, teachers, nurses, and packet designers老師、護理師和包裝設計師 very often say很常改說 Recommended Daily Allowance Recommended Daily Allowance instead, because因為 daily daily(每日)這個字 is is the word people already have大家已經很熟悉的字。Both expansions這兩種展開方式 point to指的是 the same kind of number同一種數字; dietary dietary(飲食的)那個 is是 the older official one比較舊的正式說法。

An RDA is a guide, not a promise and not a law. It was built for a normal healthy adult, so a child, a pregnant woman, or someone who is ill may need more or less. Eating a bit over or under on one day is normal; the idea is the pattern over time.

An RDA RDA is是 a guide一個參考指標, not而不是 a promise一個保證 and也不是 not a law一個法律規定。It它 was built是為了 for a normal healthy adult一般健康成人設計的, so所以 a child, a pregnant woman, or someone who is ill小孩、孕婦或生病的人 may need可能需要 more or less更多或更少。Eating吃 a bit over or under稍微多一點或少一點 on one day在某一天, is是 normal正常的; the idea重點在於 is是 the pattern over time長期下來的模式。

You will also meet newer names for the same job, such as DV on some US packets and NRV on many Taiwan and European labels. Other groups use the same three letters for completely different things, so if you are not in a food or health context, check.

You你 will also meet也會遇到 newer names更新的名稱 for the same job做同樣的事, such as例如 DV DV on some US packets在一些美國包裝上 and和 NRV NRV on many Taiwan and European labels在許多台灣和歐洲的標示上。Other groups其他團體 use the same three letters用同樣這三個字母 for completely different things指完全不同的東西, so所以 if如果 you你 are not in a food or health context不是在食物或健康的情境裡, check就要查證一下。