### Chinese: 众所周知，在事故发生后救护车来的过程中其实是还有一段时间的，而正是这段时间才是最关键的。
### English: As we all know, there is still a period of time before the ambulance arrives after the accident, and it is this period of time that is the most critical.

### Improved English: As everyone knows, there is a period before the coming of the ambulance after the accident happens, which is most critical.
