back to the drawing board
01
다시 처음부터, 처음부터 다시 하기
used when one has to return to the beginning of a process and redo the process after one's effort has failed
idiom
예시들
The prototype of the product did not work as planned, so we have to go back to the drawing board and come up with a new design.
첫 번째 마케팅 계획이 실패해서 다시 처음부터 시작하게 됐다.
