rainwater junction pipe

例句：

1. 1.The rainwater junction pipe is essentialfor the proper functioning of the drainagesystem.
   雨水连接管对于排水系统的正常运行至关重要。
2. 2.The rainwater junction pipe was installedto prevent water from entering the building duringheavy rainfall.
   雨水连接管的安装是为了在大雨时防止水进入建筑物。
3. 3. The rainwater junction pipe was damaged during therecent storm, requiring immediate repair.
   最近一场暴风雨中雨水连接管受损，需要立即修复。