Zài / wú / xiàn / diàn / shī / líng / shí / shì / bīng / zhǐ / néng / yòng / qí / yǔ / chuán / dì / mìng / lìng在无线电失灵时,士兵只能用旗语传递命令。When the radio failed, the soldiers could only use semaphore to transmit orders.