1. Let's start from very beginning again.

我们再从头开始吧。

2. Let's go back to square one.

我们重新开始吧。

3. Let's go back to the drawing board.

我们重新开始吧。

4. Let's start from scratch again.

我们重新开始吧。

5. Let's do it all over again.

我们重新来过吧。

6. Let's make a fresh start.

我们重新开始吧。

7. Let's start from zero again.

我们再从零开始吧。

8. Let's get back to the starting point.

我们回到起点吧。

9. I'm afraid we'll have to scrap¹ the plan and redo it completely.

我们恐怕得放弃这个计划然后全部重来。

10.Let's roll it back to the beginning.

我们回到起点吧。