And, in any arbitrary crucible full of molten silver, half of them are going to be spin-up and half of them are going to be spin-down.

并且，在任一个浇满了熔银的坩埚中，银原子中的电子一半是向上转,另一半是向下转。

麻省理工公开课 - 固态化学导论课程节选

Here, the gold and silver apples are specifically alchemical symbols of body and soul, and a kind of mystical image of earthly paradise.

这里银苹果金苹果具体指,身体和灵魂魔法上的象征，是古时天堂的一种形象。

耶鲁公开课 - 现代诗歌课程节选