记忆抹不平的是悲伤回忆忘不掉的是疼痛
[jì yì mŏ bù píng de shì bēi shāng huí yì wàng bù diào de shì téng tòng]
This translates to 'The memories that can't be erased are those of sorrow; the pain that can't be forgotten remains.' It suggests that some sad or traumatic experiences are so deep-rooted that they remain indelible in one's memory. The user may want to reflect on these difficult past experiences.