表达 “back to the drawing board” 的意思是 “正在进行中的项目或采用的计划失败了，要重新开始、从头再来，才能让事情成功”。

• I’m sorry, but this idea just won’t work. We need to go back to the drawing board.
  不好意思，这个主意行不通。我们得重新开始。
• After several non-starts, we took the project back to the drawing board and now, it works!
  几次启动失败后，我们从头开始调整了这个项目，现在进行得很顺利！
• The board of directors need to go back to the drawing board and rethink their strategy in improving their marketing campaign.
  董事会需要从头开始制定计划，重新思考改进营销活动的策略。