Nà duàn jīnglì ràng tā kègǔ-míngxīn, zhōngshēn nánwàng.
That experience was etched deeply in her heart and impossible to forget for life.
Tips
memory
刻 = 'to engrave,' 骨 = 'bone,' 铭 = 'to inscribe' (as in a metal inscription), 心 = 'heart.' The idiom pictures something so profound it is carved into your bones and inscribed on your heart.