杰夫的努力是有报答的。

All Jeff's hard work is paying off.

youdao

例如，如果我需要一辆自行车，因为我的车还摆在商店里（估计是无力购买的意思，译者按），我通常会还以报答的关心，如看孩子或帮他们购买食品杂货。

For instance if I need a ride because my car is in the shop, we usually set up a return favor like babysitting or doing their grocery shopping for them.

youdao

我们应该报答他的好意。

We should repay his kindness.

youdao

Why should I act in such a way if I have no expectation or reasonable expectation that those around me will reciprocate?

如果我对别人的报答,没有期望或合理的期望,我为什么要这样做？

耶鲁公开课 - 政治哲学导论课程节选