And we know that n describes the total energy, that total binding energy of the electron, so the total energy is going to be equal to potential energy plus kinetic energy.

我们知道，n是描述总能量的，电子总的结合能，所以总能量，等于,势能加动能。

化学原理课程节选 : 麻省理工公开课

Every Saturday morning I'm going through Stop 'N Shop and there's Nora Jones in the background playing.

每周六我都会路过"Stop 'N Shop"超市,那里总在放诺拉·琼斯的歌

聆听音乐课程节选 : 耶鲁公开课