annuity
/əˈnjuːɪtɪ/noun
(pl. -ies)
1- a fixed sum of money paid to someone each year, typically for the rest of their life年金：
he left her an annuity of £1,000 in his will.
他在遗嘱里给她留下1,000英镑的年金。
1.1
- a form of insurance or investment entitling the investor to a series of annual sums年金保险; 年金保险投资：
as modifier an annuity scheme.年金计划。
词源
late Middle English: from French annuité, from medieval Latin annuitas, from Latin annuus 'yearly'， from annus 'year'.