a done deal
成語所屬單字deal
a done deal — 慣用語
1. Something that has been completely agreed on and cannot be changed or cancelled.
1.慣用語
釋義
已成定局的事，無法改變的安排
Something that has been completely agreed on and cannot be changed or cancelled.
例句
The merger was announced last week, so it is a done deal now.