单词	radar
释义	radar noun ra·​dar ˈrā-ˌdär  often attributive 1 : a device or system consisting usually of a synchronized radio transmitter and receiver that emits radio waves and processes their reflections for display and is used especially for detecting and locating objects (such as aircraft) or surface features (as of a planet) 2 : range of notice fell off the radar after losing their first three games Example Sentences The approaching planes were detected by radar. Recent Examples on the Web In response to these policy setbacks, drone delivery companies have more recently adopted a less conspicuous strategy for acquiring private airspace rights that is flying under the radar of most property owners. Troy Rule, Fortune, 2 Sep. 2022 Parents should also understand that consensual sharing of intimate images between adolescents, which was barely on the radar of psychologists 15 or so years ago, is no longer seen as developmentally inappropriate, said Rutledge. Elizabeth Chang, Washington Post, 29 Aug. 2022 Not only are there Pac-12 schools on the radar of the Big Ten, but schools such as Arizona, Utah, Colorado and Arizona State have all generated interest from the Big 12. Jeremy Cluff, The Arizona Republic, 26 Aug. 2022 What many of those customers did not know is that the business was on the radar of federal law enforcement. Andrew Wimer, Forbes, 17 Aug. 2022 Brown, for instance, has been on the radar of law enforcement across the country. Danny Mcdonald, BostonGlobe.com, 10 Aug. 2022 For months, Perry has been on the radar of the House select committee investigating the Capitol riot. Kim Bellware, Anchorage Daily News, 10 Aug. 2022 Because by the time my father met Greenberg, while my mom was trying to play the happy homemaker in Easton, Dan McGuiness had found himself on the radar of the DEA. Kristen Mcguiness, Rolling Stone, 7 Aug. 2022 Heart health is on the radar of other wearable device developers. Sophie Bushwick, Scientific American, 29 July 2022 See More Word History Etymology radio detecting and ranging First Known Use 1941, in the meaning defined at sense 1 Phrases Containing radar radar astronomy on someone's radar (screen) fall off the radar radar gun under the radar radar cruise control radar beacon Doppler radar anti-radar radar detector See More radar astronomy on someone's radar (screen) fall off the radar radar gun under the radar radar cruise control radar beacon Doppler radar anti-radar radar detector See More Kids Definition radar noun ra·​dar ˈrā-ˌdär  : a radio device for detecting the position of things in the distance and the direction of moving objects (as distant airplanes or ships)
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