zhǐ huī / zhōng xīn / lì yòng / yù jǐng jī / fā xiàn / le / hǎi miàn / shàng kōng / de / yì cháng / mù biāo

指挥中心利用预警机发现了海面上空的异常目标。

The command center used the early warning aircraft to detect an abnormal target over the sea.