shelter tube

例句：

1. 1.The shelter tube is a crucial part of the emergency response system.
   避难所管道是紧急响应系统的重要组成部分。
2. 2. The workers used the shelter tube to escape from the fire.
   工人们使用避难所管道从火中逃生。
3. 3.The shelter tube was designed to provide safe passage for people in need.
   避难所管道被设计为为需要的人提供安全通道。