短語詞組短語danger r signal 危險信號Fire Danger Warning Signal 火災危險警告auditory danger signal 險情聽覺信號a danger signal 危險信號normal danger signal 正常關(guān)閉信號normally danger signal 正常危險信號Tumor Danger Signal 腫瘤危險信號Danger signal machine 遮斷信號機 返回 danger signal