问心无愧的英文：
[Literal Meaning]
ask/heart/no/guilty
not to feel guilty at all

[解释]
愧：惭愧。问自己，觉得没有什么觉得惭愧的地方。

[Explanation]
to feel no qualms upon self-examination

[例子]
我已经尽我最大的努力了，虽然计划没有完成，但是我问心无愧。

[Example]
I have tried my best. Although our plan was not completed, I felt no qualms upon self-examination.

[英文等价词]
have a clear conscience

A clear conscience is a soft pillow
问心无愧,高枕无忧

A quiet conscience sleeps in thunder
问心无愧,打雷照睡

A good conscience is a continuous feast.
问心无愧天天乐。

Fulfill the desire for unashamed pleasure
得到问心无愧的满足

I have a clear conscience. I've always been fair and square.
我问心无愧。我一向是公正的。

A clear conscience laughs at false accusation
只要问心无愧,无端的指责可以一笑置之

He has fulfilled the desire for unashamed pleasure.
他已经得到了问心无愧的满足。

He felt sheepish, innocent, but sheepish
他感到局促不安，尽管问心无愧，还是局促不安。

He's lived a clean life and as a result his conscience is completely untroubled.
他过着正派清白的生活，因此完全问心无愧。

We advocate commercial reputation and morality as to fulfill the desire for unashamed pleasure.
本店崇尚商誉商德，以期得到问心无愧的满足。