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1. Oxford Dictionary

   rising main

   英式

   • n.
     a vertical pipe that rises from the ground to supply mains water to a building.；the vertical pipe of a water pump.

   • noun: rising main, plural noun: rising mains

2. • 更多解釋

   rising main

   • IPA[ˈrīziNG ˌmān]

   美式

   • n.
     a vertical pipe that rises from the ground to supply municipal water to a building.

   Oxford American Dictionary