It was unpardonable.

那是不可原谅的。

Never have sinned is the unpardonable sin.

从没犯过罪，是为了不可宽恕之罪。

The judge found him guilty of unpardonable evil.

法官认定他的罪行十恶不赦。

But in such cases as these, a good memory is unpardonable.

可是这一类的事，总不应该把宿怨记得太牢。

The one unpardonable sin of nature is to stand still, to stagnate.

自然界最不可饶恕的罪行就是驻足不前，淤滞停止。