He was afraid of letting down his parents, so he studied hard to get into university.

他很害怕让他的父母失望，所以努力学习考上了大学。

I have a dread of letting down Ray's contributors, who are expecting to see their work in his magazine.

我很害怕自己会让雷的撰稿人们失望，他们都希望看到自己的作品出现在他的杂志上。

It hurts me deeply to see people fail to cultivate! Aren't you letting down the vows you made upon first leaving home?

我见到不修行的人，觉得非常痛心，这岂不是辜负自己当初出家时所发的愿吗？

Lazy and incompetent police officers are letting the public down.

懒惰无能的警官们让公众失望。

With the College Entrance Examination around the corner, I am very nervous and in low spirits because I am afraid of letting my parents down.

高考即将来临，因为害怕让父母失望，我非常紧张，情绪低落。