a fixed sum of money paid to someone each year, typically for the rest of their life
年金
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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。
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
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[as modifier]
an annuity scheme .年金计划。
"late Middle English: from French