on standby
01
待机, 备用
connected to a power source but not actively in use
例子
The alarm system remains on standby, ready to activate if needed.
警报系统保持待机状态，准备在需要时启动。
The stereo system stays on standby until I press play to start the music.
立体声音响一直处于待机状态，直到我按下播放键开始音乐。
