the result of a set of actions, or an explanation at the end of something

The payoff for years of research is a microscope that` performs better than all of its competitors. 多年研究所得的成果是一架性能超过所有竞争对手的显微镜。

money paid to someone, especially so that they do not cause trouble or so that they will do what you want

It has been alleged that the congressman received a secret payoff from an arms dealer. 据称这位国会议员从一位军火商那里秘密收受了贿赂。