wipe the slate cleanSTART DOING somethingto agree to forget about mistakes or arguments that happened in the past 把以往的错误[争论]一笔勾销，忘记过去wipe the slate clean• First among these was the introduction of penances which, it was hoped, would wipe the slate clean.• It would be nice if we could wipe the slate clean and start over.• We must start wiping the slate clean of all such inner accounting.
→ wipe the slate clean at wipe1(3)