verb · to die with one's eyes open, typically describing a tragic, sudden, or violent death

他在突如其来的袭击中倒下，死不瞑目，双眼依然圆睁。

verb · to die with deep regret, a sense of injustice, or significant unfinished business

如果不能亲眼看到杀子仇人被绳之以法，我死不瞑目。