The experience was something he had tried to expunge from his memory.他曾努力将那段经历从记忆中抹去。They hoped to expunge the memory of that tragic event.他们希望忘记那次不幸事件。I wanted to expunge the memory of that first race from my mind.我想把首次赛跑的记忆抹去。Nothing can expunge the shame of what he did.没有什么东西能洗刷掉他所作所为的耻辱。