我们的眼泪在复习着过去我们的微笑在淹没着曾经
[wŏ men de yăn lèi zài fù xí zhe guò qù wŏ men de wēi xiào zài yān méi zhe céng jīng]
An elaborate phrase expressing that tears now remind the user of past sorrows and smiles have been overwhelmed by previous experiences, reflecting on the complexity of emotions when reminiscing about the past—joy, pain, regret, etc.