My parents had always been so proud of my grades, and I didn't want to let them down.

我的父母一直自豪于我的成绩，我不想让他们失望。

youdao

As a matter of fact, that's where we are going now. I couldn't possibly let them down now.

事实上，我们现在就动身去那儿，我不可能让他们都失望吧。

youdao

To relax, I scrunch up my shoulders to my ears and then slowly let them fall down.

为了达到彻底的放松，我把耸到与耳朵大致相平的位置，然后慢慢的把肩膀松弛下来。

youdao

I've stood in the ruins of buildings knocked down by killers and promised the survivors I would never let them down.

NPR: Transcript: President Bush At The RNC

Kidville was the first time that I let myself sit down and let them play in an environment where I knew they were safe.

WSJ: Parents Patrol Nannies Online

Because I would be very disappointed if there were actors that I looked up to because of the work they have done and then when I met them personally I'd be let down if they were obnoxious human beings.

CNN: Interview with Abhishek Bachchan