工人们在墙上掘了个洞让排污管道通过。
The workmen excavated a hole in the wall to let the sewage pipe pass through.
污水处理工程和大型排污管道：我们的项目中经常涉及泵站和大型排污管道的建设。
Sewage Treatment Plant and large sewage transfer pipeline: construction of pumping stations and large sewage transfer pipelines are often integrated into our projects.
市政工程、排污管道的防水密封等，隧道及道路工程的混凝土伸缩缝密封，陶瓷工程的粘接及填缝密封。
Waterproof sealing of municipal project, sewage conduit, sealing of dilatation joint of tunnel and road project, adhesion and sealing of ceramics.
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