核心畫面
You can picture twice as the number two stamped onto an action: not one happening, but a second one landing on top of the first — the same thing, counted off two times.
可以把 twice 想成在一件事情上蓋了個「2」的印：不是發生一次就停了，而是同一件事又來了第二回。核心畫面比較像在…更多收起
可以把 twice 想成在一件事情上蓋了個「2」的印：不是發生一次就停了，而是同一件事又來了第二回。核心畫面比較像在心裡數「一次、兩次」——把同樣的動作數成兩遍。原始詞典資料2 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。
twiceadv/twaɪs/
- 1
Two times.
- You should brush your teeth twice a day.
- No person shall be elected to the office of the President more than twice, and no person who has held the office of President, or acted as President, for more than two years of a term to which some other person was elected President shall be elected to the office of the President more than once. (1947, Twenty-second Amendment to the United States Constitution, Section 1)
- 2
Doubled in quantity, intensity, or degree.
- Thus it appears that if the machine is turning twice as slow as before, there is more than twice the former quantity in the rising buckets; and more will be raised in a minute by the same expenditure of power.
- You can't get anything thinner than a spring shad, unless you take a couple of them, when, of course, they will be twice as thin.
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。