Definition
To activate a device or system that requires energy, making it operational or ready for use.
（使）开启；（使）充能；（使）准备就绪
Make sure you power the projector up before starting the presentation.
在开始演示之前，请确保你已开启投影机。
We need a few minutes to power the new server up and set it up.
我们需要几分钟的时间来启动新服务器并进行设置。
You can only power the game controller up once it is fully charged.
游戏控制器只有在完全充电后才能启动。