不甘心，但有能怎样，一切已成定局。

Can not be reconciled, but there can be, all is a foregone conclusion.

youdao

意识到一切已成定局，内心充满悲伤，我本能的反应是回忆当初发生的一切——当初我令他失望的点点滴滴。

As the sadness and finality set in, my instinct was to play back the tapes in my mind - all the little ways I let him down.

youdao

意识到一切已成定局，内心充满悲伤，我本能的反应是回忆当初发生的一切——当初我令他失望地点点滴滴。

As the sadness and finality set in, my instinct was to play back the tapes in my mind -all the little ways I let him down.

youdao