drain sleeve

例句：

1. 1. The drain sleeve is essential for preventing water from leaking into the basement.
   排水套管对于防止水渗入地下室至关重要。
2. 2.The plumber used a special tool to remove the old drain sleeve and install a new one.
   管道工使用特殊工具来更换旧的排水套管并安装新的。
3. 3.The drain sleeve was designed to fit snugly around the pipes, ensuring proper drainage.
   排水套管设计得可以紧密地套在管道上，确保良好的排水。