- 1numA1
/ˌsevənˈtiːn/
The number 17. You use it to count things or people, and also to say how old someone is, as in "she is seventeen".
十七
核心畫面
You can think of it as the number 17 itself — the count you reach after sixteen. Like the other -teen numbers, it is built as "seven + teen", i.e. seven on top of ten, and it does the same everyday jobs any number does: counting things or people (seventeen students), and giving an age (she is seventeen).
可以想成就是「十七」這個數目本身：數到十六再往前一個。它的長相跟其他 -teen 的數字一樣，是「seven + t…更多收起
可以想成就是「十七」這個數目本身：數到十六再往前一個。它的長相跟其他 -teen 的數字一樣，是「seven + teen」——十上面再加七——所以拼法本身就把算法寫給你看了。用法也就是數字最日常的那幾件事：數東西、數人（seventeen students），還有講年紀（she is seventeen，十七歲）。原始詞典資料1 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。
seventeennum/ˈsɛv.ən.tiːn/
- 1
The cardinal number occurring after sixteen and before eighteen, represented in Roman numerals as XVII and in Arabic numerals as 17.
- [T]he charge of my moſt curious, and coſtly ingredients fraide, amounting to ſome ſeaventeene thouſand crovvnes, a trifle in reſpect of health, vvriting your noble name in my Catalogue, I ſhall acknovvledge my ſelfe amply ſatisfi'd.
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。