"He did misappropriate the public funds, but there were extenuating circumstances."

"他确挪用了公款,但有可减轻罪。"

The knowledge of his guilt tormented him.

知道了自己罪使他非常痛苦。

Nothing can extenuate his crime.

他罪无法减轻。;他罪无法用任何辩解减轻。