back to the drawing board
01
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 company's attempt to enter a new market was unsuccessful, so they have to go back to the drawing board and come up with a new plan to achieve their goals.
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.
