We have a moral obligation to protect the environment.

我们有道义责任保护环境。

Governments have at least a moral obligation to answer these questions.

政府至少在道义上有责任回应这些问题。

I've no moral obligation here.

我们有义务这样做。

We have a moral obligation , and let.

恐怕您有义务不把这秘密泄露出去。

What would you say is her moral obligation?

那么你会说她的道德义务是什么？