bermetic centrifuge

例句：

1. 1. The centrifuge was used to separate the oil fromthe water.
   离心机被用来将油从水中分离出来。
2. 2. The centrifuge is amachine that spins liquids around a centralaxis.
   离心机是一种机器，它围绕一个中心轴旋转液体。
3. 3. The centrifuge was usedto test the stability of the newdrug.
   离心机被用来测试新药的稳定性。