只有在首次运行某个项目时才需要这样做。

This only happens the first time you run a project.

youdao

在首次运行之前，必须指定运行的负载和时间。

Before we kick-off a run, we have to specify the load and the duration of the run.

youdao

在首次运行的时候，程序突出了两大人们可能 会用得到的功能。

The application prominently highlights the top two actions a user might want to take when using it for the first time.

youdao