draw a line under something
US /drɔː ə laɪn ˈʌndər ˈsʌmθɪŋ/
UK /drɔː ə laɪn ˈʌndər ˈsʌmθɪŋ/

1.
畫上句號, 一筆勾銷
to consider something to be finished and to not think about it or discuss it anymore
:
•
It's time to draw a line under the argument and move on.
是時候為這場爭論畫上句號,繼續前進了。
•
Let's just draw a line under what happened and start fresh.
我們把發生的事情一筆勾銷,重新開始吧。