injustice

不公、不公正、不公平不可数

They spent years fighting social injustice in their own community.

他们花了多年时间对抗自己社区里的社会不公。

不公平的事、不义之举可数

The court finally corrected an injustice that had lasted decades.

法院终于纠正了一件持续数十年的不公。

冤枉、误解常与 do 连用

I did him an injustice by assuming he had lied.

我以为他说谎，其实是冤枉了他。