你我的承诺被时光淹没了
[nĭ wŏ de chéng nuò bèi shí guāng yān méi le]
'Our Promise Was Buried by Time' seems nostalgic, regretful or sad about some promise or oath between friends, partners that were made long ago but ultimately not fulfilled due to passage of time and changing circumstances, which led to forgetfulness or failure to adhere.