early-warning system
柯林斯词典
1. N a network of radar and communications units intended to detect at the earliest possible moment an attack by enemy aircraft or missiles (监测敌方飞机或导弹进攻的)雷达预警系统
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1. N a network of radar and communications units intended to detect at the earliest possible moment an attack by enemy aircraft or missiles (监测敌方飞机或导弹进攻的)雷达预警系统