Lifetime
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 02:39的版本 （建立内容为“Category:etymology == wiktionary == [https://en.wiktionary.org/wiki/lifetime ref] From [https://en.wikipedia.org/wiki/Middle_English Middle English] liftime,…”的新页面）
wiktionary
From Middle English liftime, equivalent to life + time. Compare Saterland Frisian Lieuwendstied, Dutch leeftijd and levenstijd, German Low German Levenstied, German Lebenszeit, Danish livstid, Swedish livstid, Icelandic líftími.
etymonline
lifetime (n.)
also life-time, "duration of one's life," early 13c., from life (n.) + time (n.). One word from 19c. Old English had lifdæg in same sense, literally "life day."
