xiāo fáng tōng dào / yī dàn / duī mǎn / zá wù / jiù huì / chéng wéi / jiù yuán / de / sǐ jiǎo

消防通道一旦堆满杂物，就会成为救援的死角。

Once the fire escape is cluttered with debris, it becomes a dead zone for rescue operations.