be done and dusted
US /bi dʌn ænd ˈdʌstɪd/
UK /bi dʌn ænd ˈdʌstɪd/

成語
1.
大功告成, 徹底完成
to be completely finished or successfully completed
範例:
•
Once this report is submitted, the whole project will be done and dusted.
一旦這份報告提交,整個項目就大功告成了。
•
Let's get this task done and dusted before lunch.
我們午飯前把這項任務徹底完成吧。
在 Lingoland 學習這個單詞