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CET-4 CET-6 考研 TOEFL IELTS BNC: 7112 COCA: 4780

radar

radar /ˈreɪˌdɑɚ/ noun
plural radars
radar
/ˈreɪˌdɑɚ/
noun
plural radars
Learner's definition of RADAR
: a device that sends out radio waves for finding out the position and speed of a moving object (such as an airplane)雷达
[count]
[noncount]
often used figuratively in informal U.S. English在非正式美国英语中常用作比喻

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