雷达yīngwénjièshì:
  • n.  locator
  • n.  radar
  • n.  radar (radio detecting and ranging)
  • n.  system for detecting the presence, position or movement of solid objects within its range by sending out short radio waves which they reflect

(fēizhùcèchéngyuánměiyèzànxiàn 4 lì)