短語詞組短語parachute distress rocket signal 降落繖遇險火箭信號;跳繖火箭求救信號red star distress rocket signal 紅星遇險火箭信號pyrotechnical distress signal 菸火遇險信號misuse of distress signal 誤用遇險信號smoke distress signal 菸霧呼救信號plant distress signal 植物求救信號personal distress signal unit 珮帶者不適信號裝置automatic distress signal 自動遇險信號distress signal rocket [水運]遇險信號火箭 返回 distress signal