I think I had managed to get to this point here where I show what happens when the cation, here sodium, is in contact with the anion here, chlorine.

我想我能回到这儿,当阳离子，在这里是钠，和阴离子，氯离子接触会发生什么。

麻省理工公开课 - 固态化学导论课程节选

At some point you came in contact with this Palestinian.

在某一时刻你遇到了这位巴勒斯坦人。

普林斯顿公开课 - 人性课程节选

You want decisions to be made there so you need some additional mechanism for decision making at the point of contact between the axon of one cell and the dendrite of another.

而想要做出决定,在一个细胞的轴突和下一个细胞的树突,的连接点上 需要额外的决策机制

耶鲁公开课 - 生物医学工程探索课程节选