put the clock back

Từ điển Oxford Advanced Learner 8th

put/turn the ˈclock back idiom
1. to return to a situation that existed in the past; to remember a past age
•I wish we could turn the clock back two years and give the marriage another chance.
2. (disapproving)to return to old-fashioned methods or ideas
•The new censorship law will turn the clock back 50 years.
Main entry: ↑clock_idiom