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ra.darH5reI7dB:5, $-dB:rn [U]a system which uses radio waves to find the position of objects which cannot be seen雷达，无线电探测器(仪)，无线电定位器(仪)Even small ships now have radar.现在连小船都有雷达。The new fighter plane is designed to be invisible to radar.新的战斗机被设计成让雷达探测不到。Radar satellites are used to track targets through clouds and at night.雷达卫星被用来穿过云层或在夜间跟踪目标。Other vessels in the area show up on the ship's radar (screen).该地区其它船舰出现在这艘船的雷达屏幕上。Bats have a radar system which allows them to locate and catch small insects.蝙蝠具有一种雷达系统，让它们可以发现并抓住小昆虫。A radar trap is a system, using radar, which the police use to catch vehicles that are travelling too fast.雷达阱，雷达测速区We were caught in a radar trap as we drove home.我们开车回家时在一雷达测速路段被抓住(超速)。
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