可以使用它跟踪各个软件模块的进入和退出时间戳，从而收窄导致性能瓶颈的软件范围。

It can be used to track the entry and exit timestamps of various software modules that the application will interact with in order to narrow down the software causing the bottleneck.

youdao

对前两种情形考虑退出时间是个随机变量，对最后一种情形考虑退出时间是个随机过程。

In the former two situations, the exit time is assumed to be a random variable and in the last situation the exit time is assumed to be a stochastic process.

youdao

没有更多的时间来考虑了，他必须退出长征。

There was no more time left. He must quit.

youdao