短语词组短语flashing code beacon 闪光密码灯标;闪光标flashing roof beacon 闪光车顶标灯;闪光车顶灯标flashing g beacon 闪动标灯upper flashing beacon [航]飞机上部闪光灯标beacon flashing 闪光灯标;闪光标杆 返回 flashing beacon