坚持锻炼的回报是我现在感觉更健康、更有活力。

The ___pay-off of regular exercise is that I now feel healthier and more energetic.

证人承认收受了贿赂以改变他的证词。

The witness admitted taking a ___pay-off to change his testimony.

这部侦探小说的精彩铺垫在最后一章迎来了惊人的结局。

The detective novel's brilliant setup led to a surprising ___pay-off in the final chapter.