Correct

一去不复返

/ yī qù bùfù fǎn /
Strokes

Definition

gone forever

Example

Definition

gone for ever; gone never to return

1
Guāngyīn
光阴
fǎn
一去不复返
  

Lost time is never found again.

2
Guójiā
国家
fēnliè
分裂
hùnluàn
混乱
de
miàn
局面
  
,
jīng
已经
fǎn
一去不复返
le
  

The days of national disunity and chaos are gone forever.