Discontented men stirred the crew to mutiny.

不满的人煽动船员叛乱。

He has been harbouring a grudge against me.

一直对我嫉妒。

The malcontent is gunning for his supervisor.

那个不满的人在伺机加害的上司。

His ungentlemanly attempts to discredit the sale of drugs by his professional brethren would by-and-by recoil on himself.

叵测，指责同行售药品的作风，有一天会得到报应，自食恶果。

Don't harbor unkind thoughts.

不要不轨。

Don't harbo(u)r unkind thoughts.

别叵测。

Their talk was slightly malicious.

们的谈话有点儿不轨。