Word · Frequency #7112
radar
雷达,无线电探测器
a system that uses radio waves to detect and locate objects such as aircraft or ships
- 1.
In full primary radar: a method of detecting a distant object and determining its position, velocity, or other characteristics by analysing radio waves (usually microwaves) which are sent towards the object and which reflect off its surfaces; also, the field of study of this method.
全称为初级雷达:通过分析发向物体并从其表面反射的无线电波(通常是微波)来探测远处物体并确定其位置、速度或其他特征的方法;也是研究该方法的领域
- 2.
Often preceded by a descriptive word: a natural (for example, in an animal such as a bat) or human-made detection method based on the analysis of reflected signals other than radio waves, as light waves or sound waves; (countable) an instance of this.
通常由描述词修饰:基于分析反射信号(如光波或声波)而非无线电波的自然(例如动物如蝙蝠)或人造探测方法;(可数)此类方法的实例
- 3.
A superior ability to detect something; an awareness, an intuition.
卓越的探测能力;意识,直觉
全称为初级雷达:通过分析发向物体并从其表面反射的无线电波(通常是微波)来探测远处物体并确定其位置、速度或其他特征的方法;也是研究该方法的领域;通常由描述词修饰:基于分析反射信号(如光波或声波)而非无线电波的自然(例如动物如蝙蝠)或人造探测方法;(可数)此类方法的实例;卓越的探测能力;意识,直觉;雷达;无线电探测器;[计] 雷达图
In use
The airport uses radar to track incoming flights.
Some drivers rely on radar detectors to avoid speeding tickets.
Military radars can detect objects hundreds of kilometers away.
detect/track sth with radar
表示使用雷达作为工具来检测或追踪目标。
The air traffic controller tracked the plane with radar.
空中交通管制员用雷达追踪那架飞机。
appear on radar
常用于气象或航空语境,表示目标被雷达探测到。
The storm appeared on radar just before noon.
风暴在中午前就出现在雷达上。
radar shows/indicates sth
雷达作为主语,表示其显示或指示的内容。
Connections
Collocations
- radar screen
- 雷达屏幕
- The plane disappeared from the radar screen.飞机从雷达屏幕上消失了。
- radar detector
- 雷达探测器
- He installed a radar detector in his car to avoid speeding tickets.他在车上安装了雷达探测器以避免超速罚单。
- radar gun
- 雷达测速枪
- The police officer used a radar gun to check the speed of passing vehicles.警察用雷达测速枪检查过往车辆的速度。
- radar system
- 雷达系统
- The airport uses an advanced radar system to track aircraft.机场使用先进的雷达系统跟踪飞机。
- radar image
- 雷达图像
- The weather forecast showed a radar image of the approaching storm.天气预报显示了正在逼近的暴风雨的雷达图像。
- radar technology
Learner notes
Memory Tip
雷达的英文radar,可拆解为rad(发射)和ar(返回),形象记忆其工作原理。
Context & Register
[object Object]
Grammar Note
可数名词,指雷达设备
Pronunciation & Spelling
These words share the -ar spelling ending with radar, but their pronunciation (/ɑːr/) differs from radar's (/ˈreɪdə/). They are not rhymes.
Usage priority
Collins 词频等级为 2,建议结合例句记忆,而不是只背中文释义。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.