If we put a dipole that has the freedom to move, we put that dipole in an electric field, it will align itself with the field lines.

若我们将偶极释放到自由空间中，比如说放到电场里，他们会自动排序按同一方向。

麻省理工公开课 - 固态化学导论课程节选

We show the field lines and we show them settling down into molecules.

便展现出区域中的线条,以及物质如何,分解成分子。

麻省理工公开课 - 媒体、教育、市场课程节选