léi dá / fā xiàn / dí jī / zhèng zài / jiē jìn / zhǐ huī / zhōng xīn / lì jí / fā chū / jǐng bào

雷达发现敌机正在接近，指挥中心立即发出警报。

The radar detected an enemy plane approaching, and the command center immediately issued an alert.