What good is it -- you'll remember -- what good is it, Milton asks, ; "to tend the homely slighted shepherd's trade"; that's, of course, the vocation of poetry if that shepherd-poet is just going to be struck down in his prime as Edward King had been?

大家可以看到，弥尔顿在这里发出了疑问，“进行平凡微不足道的诗歌创作“，又有何益;,当然，就田园诗人而言，诗歌的天命,是否在于如同爱德华金一般的英年早逝？

耶鲁公开课 - 弥尔顿课程节选

So, if we just rearrange this equation, what we find is that z effective is equal to n squared times the ionization energy, IE all over the Rydberg constant and the square root of this.

我们可以发现有效的z等于n的平凡，乘以电离能除以里德堡常数,这些所有再开方，所以等于n乘以,除以RH整体的平方根。

麻省理工公开课 - 化学原理课程节选