我曾已为再美的时光
[wŏ céng yĭ wéi zài mĕi de shí guāng]
Translated literally it talks about the user being involved or engaged in ‘even more beautiful times,’ reflecting nostalgia or remembrance of particularly happy, precious moments from the past which may have left an irreplaceable impression on them. However, it appears to also acknowledge those beautiful moments have passed.