When you buy an annuity, the insurance company repays your money – with interest – as an income stream over a period of time.
这个合同的内容包括：客户向保险公司购买年金，保险公司在某一利率情况下，在一段时期内向客户进行返还。
2
Other things being equal, a reduction in short-term interest rates should bump up asset values, because their stream of future earnings is discounted by a smaller factor.
Slowly, deliberately, without excitement or more than the most casual interest, he followed the course of the strange stream toward the skyline and saw it emptying into a bright and shining sea.