The speech is proceeding rather smoothly and, I think, kind of explicably as the Lady defends the sun-clad power of chastity.

我认为演说进行的相当顺利，当女士维护贞节如太阳一般的力量时，听上去是可解释的。

耶鲁公开课 - 弥尔顿课程节选

The way he described is when you try to get down a quantum dimensions and you are standing there with your camera, just remember the sun is at your back and your shadow is always in the picture.

这种方法被他描述为,当你试着处理一个量子尺寸时,并且你试着拿着你的相机在那，记住太阳在你的背后,而你的影子总是在照片上。

麻省理工公开课 - 固态化学导论课程节选