radar 英 [ˈreɪdɑ:(r)] 　 美 [ˈredɑr]

radar

radar　 英 [ˈreɪdɑ:(r)] 美 [ˈredɑr]

n. [雷达] 雷达，无线电探测器　

名词复数:radars　

They acquired the target by radar.　他们用雷达捕获了目标。
They located the ship by radar.　他们通过雷达确定了船只的位置。

  • 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.
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  • n. [雷达] 雷达，无线电探测器

  • 1. They acquired the target by radar.

    他们用雷达捕获了目标。

  • 2. They located the ship by radar.

    他们通过雷达确定了船只的位置。

  • 3. a radar screen

    雷达显示屏

  • radar (n.) "electronic system for locating objects by means of radio waves," 1941, acronym (more or less) from radio detecting and ranging. The U.S. choice, it won out over British radiolocation. Figurative from 1950.
radar / ˈreɪdɑː(r) ; NAmE ˈreɪdɑːr / noun [uncountable ] a system that uses radio waves to find the position and movement of objects, for example planes and ships, when they cannot be seen 雷达 ◆ They located the ship by radar. 他们通过雷达确定了船只的位置。 ◆ a radar screen 雷达显示屏 ☞compare sonar IDIOMS below/under the ˈradar used to say that people are not aware of sth 在视线以外的；未引起注意的 ◆ Experts say a lot of corporate crime stays under the radar. 专家说许多公司犯罪还没有为人所注意到。 on/off the ˈradar screen used to say that people's attention is on or not on sth 受╱不受人关注 ◆ The issue of terrorism is back on the radar screen. 恐怖主义问题重新受人关注。 ☞more at bubble   v. radar radars radar / ˈreɪdɑː(r) ; NAmE ˈreɪdɑːr /
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词频排名 noun:4825
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