So, this is a positive sphere of custard, and inside are little, negative bits.

这是一个带正电荷球状的乳蛋糕，里面有一些小的负电荷的小块。

麻省理工公开课 - 固态化学导论课程节选

I don't know if I'd eat it if it were put in front of me, but anyways, I'm told that it looks something like this, that you have the custard with little fragments of plum inside.

我不知道,就算这东西曾经放在我面前，就算我吃过它，但是无论如何，但是有人告诉过我有些东西长得像这样，如同在一些小块的梅子,放在乳蛋糕里面。

麻省理工公开课 - 固态化学导论课程节选