water under the bridge
過去的事情;已經發生的無法改變的事情
口語·表示釋懷或放下過去
英文釋義
something that happened in the past and is no longer important or relevant
例句
We had a fight last year, but it's all water under the bridge now.
典故來源
源自水流過橋下后一去不返的意象,比喻過去的事不再重要。