擦也擦不掉的痕迹忘也忘不了的记忆
[cā yĕ cā bù diào de hén jī wàng yĕ wàng bù le de jì yì]
Translating to 'Unremovable traces, unforgotten memories.' Traces here refer to visible marks or imprints left by experience; unforgettable memories indicate lasting effects that an experience has had over oneself, emphasizing their indelible impression and lingering influence.