“愤愤不平”，汉语成语，意思是心中不服，感到气愤，形容很生气的样子。可以翻译为“be indignant; feel aggrieved; be resentful”。|

例句：

他们因没有受到邀请而愤愤不平。

They were indignant that they hadn't been invited.

每个人都会因不公平的待遇而愤愤不平。

Everyone will feel aggrieved at unfair treatment.