英语口语 
  
 Back in the day. 很久之前 
  
 He was a great basketball player
 back in the day. He made really good music back in the day.
She was an amazing actress back in the day.
I could’ve done this back in the day when I was more limber.
Back in the day I was used to messaging 20 girls at once. Now I'm down to five.
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