镌骨铭心 / 鐫骨銘心

juān​gǔ​míng​xīn

unforgettable

etched in one's bones and heart; an ever-present memory (especially of resentment)

这段镌骨铭心的仇恨，他一辈子也忘不了。

idiom

created sense Mar 4, 2026, 02:25 AM