刻骨銘心

- imprint (on) the bones and inscribe on the memory -- heartfelt; engraved in the bones and printed on the heart -- eternal gratitude; gratitude for a kindness impossible to forget; inscribe (a debt of gratitude) on one's mind [in one's heart]; remember with gratitude to the end of one's life; be engraved on one's bones and heart -- to be remembered with deep gratitude; be inscribed in one's heart; fix indelibly sth. in one's memory; make a deep impression; (Your kindness) is engraved on my heart.