"electronic system for locating objects by means of radio waves," 1941, acronym (more or less) from radio detecting and ranging. The U.S. choice, it won out over British radiolocation. Figurative from 1950.
中文解释
1. 音译“雷达”。2. 雷达，是英语单词Radar的音译，源自“Radio Detecting and Ranging”的缩写，意思为“无线电探测和测距”，即用无线电的方法发现目标并测定它们的空间位置。
实用例句
1. It was yet another case where the human eye outperformed radar.
这是肉眼胜过雷达的又一事例。
来自柯林斯例句
2. The plane is used for electronic jamming and radar detection.
这架飞机用于进行电子干扰和雷达探测。
来自柯林斯例句
3. The US crew fixed its radar on the Turkish ship.
