原谅被你带走的永远
[yuán liàng bèi nĭ dài zŏu de yŏng yuăn]
It refers to the willingness to forgive what was taken away (possibly time or happiness) by someone. There is an air of sorrow and magnanimity. Sometimes, 'forever' may also refer to deeper sacrifices made by oneself that can only be remembered within one's heart.