短语词组短语annuity -due payable mthly 期初付年金apportionalbe annuity -due 比例期初年金annuity y due 期初年金amount of annuity due [金融]到期年金终值;期初年金终值life annuity due 应付终生年金amount of an annuity due 到期年金终值due annuity 期初付年金 返回 annuity due