literal meaning: scars and wounds piled in heaps
translated: having been hurt countless times
伤痕
shānghén
wound, bruise
累累
lěilěi
continuous, accumulated
伤
shāng
wound, injury
痕
hén
trace, mark
累
lěi
repeated
累
lěi
repeated
庄心妍 - 走着走着就散了
Zhuang Xin Yan - Zou Zhe Zou Zhe Jiu San Le
伤痕累累才懂认真我就输了
Shānghén-lěilěi cái dǒng rènzhēn wǒ jiù shūle
Only after being repeatedly hurt and scarred do I truly understand that I have lost
In this lyric, the singer uses the idiom to describe emotional pain. After having her feelings hurt countless times, she sheds her naiveté and becomes deeply cynical.