jiù yuán / wú rén jī / zài / zhǐ dìng / kōng yù / dài jī / jiē dào / zhǐ lìng / hòu / lì jí / qǐ fēi

救援无人机在指定空域待机，接到指令后立即起飞。

The rescue drone remains on standby in the designated airspace and takes off immediately after receiving instructions.