pump for hot alkali solution

例句：

1. 1. The pump is used to circulate the water in the tank.
   这个泵用来在水箱中循环水。
2. 2. The engineer pumped the oil from the engine to the drain.
   工程师把油从发动机抽到排水口。
3. 3. The pump was essential for maintaining the cleanliness of the room.
   泵对于保持房间的清洁至关重要。