payback

名词 payback:

1. financial return or reward (especially returns equal to the initial investment)
2. the act of taking revenge (harming someone in retaliation for something harmful that they have done) especially in the next life
   同义词：vengeance, retribution

1. Expect a payback within six years.
   期望在六年内收回一切投入

pay.back

n.（名词）

The return gained from or paid on an investment:
报答：对投入而获得的或应付给的回报：
例句：
.One problem with space ventures is that the up-front costs are enormous and the paybacks uncertain and far off at best.(Eric Gelman)
.太空事业的一大问题是，付出巨大的代价，但是回报却是未卜的或远不尽人意.(埃里克·盖尔曼)

The return on an investment equal to the amount invested:
回报：获得与投入相等的回报：
例句：
expect a payback within six years.
期望在六年内收回一切投入

A benefit gained as the result of a previous action.
获到：因以前活动所获得的利益
The act or process of paying back.
偿还：回报的行为或过程