pouring gate

例句：

1. 1. The pouring gate is designed to allow water to flow freely.
   倒流门设计用来让水自由流动。
2. 2.The inflow gate is used to control the flow of water into the building.
   流入门用来控制水流进建筑物。
3. 3. The outflow gate is located at the bottom of the drainpipe and prevents wastewaterfrom flowing back into the system.
   流出门位于排水管底部，防止废水回流到系统中。