Question

radar n.雷达 (1) 雷达萤屏上出现了敌人的飞机。(2) 他们借雷达标示飞机的动向。 Radar is a scientific method of figuring out where objects are — it's used today by the Coast Guard, astronomers, and the military, among others. Researchers in the late 1800's and early 1900's realized that radio waves could be reflected off solid objects, and by World War II radar was frequently used to detect ships and planes. The name radar is a shortened form of the phrase "radio detecting and ranging."

Accepted Answer

英 ['reɪdɑː(r)] 美 ['reɪdɑːr] (1) There are enemy aircraft on the radar screen.(2) They plotted aircraft movements by radar. Radar is a system for locating objects by bouncing radio waves off of them. Air traffic controllers use radar to keep track of exactly where airplanes are. 1[N-VAR 可变名词]雷达；无线电定位装置 Radar is a way of discovering the position or speed of objects such as aircraft or ships when they cannot be seen, by using radio signals.   [oft N n]Pilots complained that the radars in the Mirages malfunctioned during conditions of high humidity...飞行员抱怨说在高湿度条件下，“幻影”战斗机上的雷达出现了故障。The aircraft was on a flight from Milan when it disappeared from radar screens.飞机是在从米兰出发的飞行途中从雷达屏上消失的。

英语单词	radar
英美音标	英 ['reɪdɑː(r)] 美 ['reɪdɑːr]
中文释义	n.雷达
英语例句	(1) There are enemy aircraft on the radar screen. (2) They plotted aircraft movements by radar.
中文例句	(1) 雷达萤屏上出现了敌人的飞机。 (2) 他们借雷达标示飞机的动向。
vocabulary简明	Radar is a system for locating objects by bouncing radio waves off of them. Air traffic controllers use radar to keep track of exactly where airplanes are.
vocabulary扩展	Radar is a scientific method of figuring out where objects are — it's used today by the Coast Guard, astronomers, and the military, among others. Researchers in the late 1800's and early 1900's realized that radio waves could be reflected off solid objects, and by World War II radar was frequently used to detect ships and planes. The name radar is a shortened form of the phrase "radio detecting and ranging."
柯林斯解释	1 [N-VAR 可变名词]雷达；无线电定位装置 Radar is a way of discovering the position or speed of objects such as aircraft or ships when they cannot be seen, by using radio signals. [oft N n] Pilots complained that the radars in the Mirages malfunctioned during conditions of high humidity... 飞行员抱怨说在高湿度条件下，“幻影”战斗机上的雷达出现了故障。 The aircraft was on a flight from Milan when it disappeared from radar screens. 飞机是在从米兰出发的飞行途中从雷达屏上消失的。

Radar Aircraft Objects Radio Waves Ships 英 Reɪdɑː(R)] 美