短語詞組短語distress telephone call 遇險(xiǎn)電話呼叫distress telex call 遇險(xiǎn)電傳呼叫distress radio call system 遇險(xiǎn)無線電呼叫系統(tǒng);遇險(xiǎn)無線電呼救系統(tǒng)distress priority call 優(yōu)先遇險(xiǎn)呼叫;遇險(xiǎn)優(yōu)先呼叫distress -call pulse 求救信號(hào)脈沖animal distress call 動(dòng)物危難叫喊distress call format 遇險(xiǎn)呼叫格式no distress call 未發(fā)求救信號(hào)distress call apparatus 遇難呼救裝置 返回 distress call