radar

/ˈreɪˌdɑr/

measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects

Chinese meaning: 雷达；雷达设备

The airport uses radar to track incoming flights and ensure safe landings.

机场使用雷达追踪进港航班并确保安全着陆。

Weather radar can detect approaching storms and provide early warnings.

天气雷达可以探测到正在逼近的暴风雨并提供预警。