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radar

美国发音:['reɪdɑr]
英国发音:['reɪdɑː(r)]

[n]
英语解释:a system that uses reflected radio waves to determine the presence, location, and speed of distant objects. The system has military, law-enforcement, and navigational applications.
常见翻译:〔美国〕【无线电】雷达,无线电探测器