Definition
This phrase is used to indicate that an event has already occurred and cannot be altered.
木已成舟
I know you regret not buying the stock earlier, but what's done is done, we can only move forward.
我知道你後悔沒有早點買股票，但木已成舟，我們只能往前看。
He made a mistake, but what's done is done, we need to focus on solving the problem now.
他犯了一個錯誤，但木已成舟，我們需要專注於解決問題。
Although I wish the outcome was different, what's done is done, and we must accept it.
雖然我希望結果不同，但木已成舟，我們必須接受它。