zhè / duàn / shī / bài / de / jīng / lì / chéng / le / tā / xīn / lǐ / duō / nián / wèi / yù / de / yǐn / tòng

这段失败的经历成了他心里多年未愈的隐痛。

This failed experience became a lingering emotional pain in his heart for many years.