Definition
to finish a task or matter completely, often to avoid further hassle or delay.
將整件事情處理並結束。
I’ve decided to sell the old car and have done with it.
我決定把舊車賣掉，一了百了。
We should complete this report now and have done with it.
我們現在應該完成這份報告，一了百了。
Instead of procrastinating, let's just solve the problem now and have done with it.
與其拖延，不如現在就解決這個問題，一了百了。