數字 20
純粹的數字本身，後面所有用法都從這裡借走「20」這個量。
the number 20 · number · A1
The number 20.
二十
核心畫面
At heart it is just the number 20. Every other use is that same '20' attached to something — a decade, an age, a temperature, a — so the count stays the same and only what it counts changes.
核心就只是數字 20。其他所有用法都是把同一個「20」貼到不同東西上——一個年代、一段年紀、一個氣溫、一張鈔票——數…更多收起
核心就只是數字 20。其他所有用法都是把同一個「20」貼到不同東西上——一個年代、一段年紀、一個氣溫、一張鈔票——數字沒變，變的只是它在數什麼。Four branches
用 20 表示的年代與年紀
把「20 出頭」這個量套在時間上：可以是一個世紀裡的 20 年代，也可以是一個人 20 幾歲的那段年紀。
the twenties · number · A1
In the phrase 'the twenties' — the years from 1920 to 1929.
二〇年代
用 20 表示的氣溫
再把「20–29」這個區間套到溫度計上：天氣落在二十幾度。
in the twenties (temperature) · number · A1
In the phrase 'in the twenties' about weather — a temperature between 20 and 29 degrees.
二十幾度
二十元鈔票
用面額替整張鈔票命名：一張值 20 的紙鈔，就直接叫它 a twenty。
twenty-dollar bill · number · A1
A piece of paper money worth twenty dollars or twenty pounds.
二十元鈔票
原始詞典資料6 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。
Twentyname
- 1
A hamlet in Bourne parish, South Kesteven district, Lincolnshire, England (OS grid ref TF1520).
twentynum/ˈtwɛnti/
- 1
The cardinal number 20, occurring after nineteen and before twenty-one.
twentynoun/ˈtwɛnti/
- 1
The numbers twenty (20) to twenty-nine (29).
- She looks like she's in her early twenties, perhaps 21 or 22 years old?
- 2
A banknote with a denomination of 20.
- The waiter’s face lit up when I gave him a twenty.
- Of course I can do them just the same as the others—technically there's nothing whatever against it. Only no one ever heard of soft flims for anything like that—only for fives or tens or at the most a twenty.
- 3
10-20 (location).
- What’s your twenty, good buddy?
- What's your twenty? Where's your brain? Checking in to check you out Concerned about your whereabouts
- 4
historicalgovernmentmilitarypoliticsAn old English division of infantry.
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。