snow wall

• 挡雪墙

snow wall的用法和样例：

例句

1. After the igloo is completed begin to dig downward to enlarge the inner chamber.The entrance should be dug in below the main chamber area, similar to the snow cave.
   开始的时候里面的人一定要小心工作了防止雪墙倒塌，一块一块垒到第三层的时候雪墙就能自已支撑住不倒了。