But don't worry about these symbols don't worry about them too much.

但别担心这些象征,别太担心。

耶鲁公开课 - 现代诗歌课程节选

That's it. Again, these other p dxy dyz - or the d x y, d y z, those are going to be those more complicated linear combinations, you don't need to worry about them.

同样，这些p轨道,或者，它们是一些,很复杂的线性组合，你们，不用管它。

麻省理工公开课 - 化学原理课程节选