ancient history
idiomPart ofhistory
ancient history — idiom
1. an event or situation that happened so long ago that it is no longer relevant or
1.慣用語
釋義
an event or situation that happened so long ago that it is no longer relevant or worth discussing.
例句
Trang and Sora dated years ago, but that is ancient history now.
The team's loss last season is ancient history — they are focused on winning now.