radar

/ˈreɪˌdɑr/

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

中文释义：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。