有些痛无法忘记有些事情非得已
[yŏu xiē tòng wú fă wàng jì yŏu xiē shì qíng fēi dé yĭ]
Implying there are pains too deep to forget and situations not entirely under one's control. It speaks of regret and unresolved matters that continue to impact the individual's emotions and choices.