back to the drawing board
начать с чистого листа, начать всё с начала
Cora must have failed to achieve good results in her experiment so she had to go back to the drawing board.
Другие идиомы:
- back out (of something)
- back in circulation
- back-to-back
- behind one's back
- have one's back to the wall
- cover one's back
- turn one's back on (someone or something)
- back and forth
- back on one's feet
- give (someone) the shirt off one's back
- back down (from someone or something)
- back the wrong horse
- stab (someone) in the back
- behind (someone's) back
- put one's back into (something)