短語詞組短語radar -reflecting distress signal rocket 雷達(dá)反射遇險(xiǎn)信號(hào)火箭parachute distress rocket signal 降落繖遇險(xiǎn)火箭信號(hào);跳繖火箭求救信號(hào)red star distress rocket signal 紅星遇險(xiǎn)火箭信號(hào) 返回 distress signal rocket