polar molecule

• 极性分子

polar molecule的用法和样例：

例句

1. A molecule where the centers do not coincide is called a polar molecule.
   正负电荷中心不重合的分子称为极性分子。
2. Nonpolar molecules and polar molecules don't mix together well, so the water and the oil stay separate.
   非极性分子和极性分子不会互相混和，所以油和水会保持分离。