| 释义 |
DEW line AHD[do͞o, dyo͞o] D.J.[duː, djuː]K.K.[du, dju]n.（名词）- A line of radar stations near the 70th parallel across the North American continent, maintained by the United States and Canada and intended to give advance warning of approaching enemy aircraft and missiles.远程雷达警报线：雷达站的战线，位于穿越北美洲的大陆的北纬70度附近，由美国和加拿大设立，在敌人的飞机和导弹进入时可以发出预先警报
- D(istant) E(arly) W(arning) D(istant) E(arly) W(arning)
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