eductor pump

例句：

1. 1. The eductor pump is used to control the flow of water in a classroom.
   教育者泵用于控制教室中水流的流动。
2. 2. The eductor pump was designed to improve the efficiency of water distribution in schools.
   教育者泵被设计用来提高学校水分配的效率。
3. 3. The eductor pump is essential for maintaining proper hygiene in a classroom.
   教育者泵对于保持教室内的卫生至关重要。