基本解释n.航线标志同根派生 英汉例句The plane homed in on the radio beacon. 飞机遵循导航台信号降落。an airway beacon 航路灯塔A beacon flamed out against the night sky. 灯塔在夜空衬托下闪亮。principal airway beacon 主航路信标airway beacon 航路信标