back to the drawing board
US /bæk tu ðə ˈdrɔɪŋ bɔrd/
UK /bæk tu ðə ˈdrɔɪŋ bɔrd/

1.
從頭再來, 回到起點
to start again on a plan or idea because the previous one has failed
:
•
Our first attempt failed, so it's back to the drawing board.
我們第一次嘗試失敗了,所以要從頭再來。
•
The client rejected the design, so we're back to the drawing board.
客戶拒絕了設計,所以我們要從頭再來。