这对于建立忠诚度来说至关重要，没有什么比曾体验过最佳服务的客户觉得失望更加糟糕的事情。

This is crucial for building loyalty, and there is nothing worse than letting a customer down after they have a good experience.

youdao

没有适当的回报，那些做了好事的人有时会觉得失望，而许多其他的人则干脆不愿做好事。

Without proper rewards, those who have done good deeds may sometimes feel disappointed and many others will simply shy away from doing good deeds.

youdao