His shield, in addition to being a defensive thing, is also potentially an offensive weapon.

他的盾牌,除了能提供防御和保护之外,同样也是一个潜在的有力武器

耶鲁公开课 - 古希腊历史简介课程节选

l But now we need to talk about l and m as well. So now when we talk about a ground state in terms of wave function, we need to talk about the wave function of 1, 0, 0, and again, as a function of r, theta and phi.

但我们现在需要讨论,和m，现在当我们讨论,波函数的基态时，我们讨论的，是1，0，0的波函数，同样的，它也是r，theta和phi的函数。

麻省理工公开课 - 化学原理课程节选