Worst-case scenario, we don't get a clean start.

最坏的情况是， 我们没有一个干净的开始。

I realized it was time for a clean start.

我觉得也是时候干干净净重新开始了。

And so a clean start is essential to being able to reimagine something as foundational as search.

因此，一个干净的开始对于重新构想像搜索这样的基础事物至关重要。