From the word’s history
From Old English hundseofontiġ; seven + -ty.
源自古英文 hundseofontiġ,就是 seven 加上 -ty。
You can think of it as the plain number 70 first — seven tens, used to count, to say how far, how long, how much, how old. The other three meanings are not extra meanings of the bare word: they are fixed phrases that use 70 as the opening of a ten-year or ten-degree stretch, so "the seventies" covers 70 up to 79, whether those are years, ages, or degrees.
原始詞典資料2 筆記錄
以下是外部詞典記錄的用法,摘錄並精簡格式,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。
Seventyname
- 1
The translators of the Septuagint
- The Seventy have totally miſrepreſented Iſaiah viii.14, 15 […].
- It was impossible to avoid pagan terminology altogether, however, and the Seventy relaxed their vigilance when dealing with poetry.
seventynum/ˈsɛv.ən.ti/
- 1
The cardinal number occurring after sixty-nine and before seventy-one, represented in Roman numerals as LXX and in Arabic numerals as 70.
摘錄自 英文維基詞典 English Wiktionary,已精簡格式;依 CC BY-SA 4.0 授權使用,改動後的內容同樣以此授權提供。