conscience

Well, at least I can face them all with a clear conscience (= the knowledge that you have done nothing wrong ) .

好吧，至少我可以问心无愧地面对他们所有人。

I can’t tell you what to do – it’s a matter of conscience (= something that you must make a moral judgment about ) .

我不能告诉你怎么办——这是良心问题。

a crisis of conscience among medical staff (= a situation in which it is very difficult to decide what is the right thing to do )

医务人员中的良心危机