The top of each wave was a hill, from which the men could see, for a brief period, a wide area of shining sea.

VOA: special.2010.03.06

If we overlay what the actual molecular orbital is on top of it, what you see is that in the center you end up cancelling out the wave function entirely.

如果我们把真实的分子轨道覆盖在上面，你可以看到中间的,波函数是完全抵消掉了。

麻省理工公开课 - 化学原理课程节选

At last,from the top of each wave the men in the boat could see land.

VOA: special.2010.03.06