reap the benefit, reward, etc. idiom
C2 得到收益／报酬等
to get something good as a result of your own actions
She studied every evening and reaped the benefit at exam time. 她每天晚上都坚持学习，考试时受益匪浅。
We sold them most of their modern weapons and now we are reaping the bitter harvest. 他们大部分的现代化武器都是我们卖给他们的，现在轮到我们自食其果了。