flushing gate

例句：

1. 1. The flushing gate is used to control the flow of water in the toilet.
   冲水门用于控制厕所中水流的流动。
2. 2. The flushing gate was designed to prevent water from flowing back into the sink after use.
   冲水门的设计是为了在使用时防止水回流到水槽。
3. 3.The flushing gate is easy to operate and requires minimal maintenance.
   冲水门易于操作，维护需求小。