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radars
Radar is a way of discovering the position or speed of objects such as aircraft or ships when they cannot be seen, by using radio signals.
a ship's radar screen.
一艘船的雷达显示屏。
雅思英语词汇收录8785个雅思英语词条，基本涵盖了全部常用雅思英语词汇的翻译及释义，是英语学习的有利工具。