一去不复返 yī qù bù fù fǎn

DEFINITIONS

  1. gone forever

CHARACTERS

一 yī
HSK 1
one; a, an; alone
去 qù
HSK 1
go away, leave, depart
不 bù
HSK 1
no, not; un-; negative prefix
复 fù
HSK 3
return; repeat; repeatedly
返 fǎn
HSK 5
return, revert to, restore