fluid pumping conveyor

例句：

1. 1. The fluidity ofthe water makes it easy to pour.
   水的流动性使得它容易倒。
2. 2. Theliquidity of the oilallows it to flow easily.
   油的流动性允许它容易流动。
3. 3. Thefluidity of the gas is crucial forits function.
   气体的流动性对其功能至关重要。