水从各个方面推挤着立方体，这个立方体也排开一定体积的水量，水量的大小视该立方体的体积大小而定。

The water pushes on all sides of the cube. The cube pushes aside a certain volume of water, depending on how large it is.

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交叉立方体的某些性质优于超立方体，比如其直径几乎是超立方体的一半。

For example, the diameter of the crossed cube is approximately half that of the hypercube.

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So, basically what he's showing in these cubes is that there are eight spaces that need to be filled up to have a full cube.

因此，基本上他在这里展示是这些立方体中一共有,八个位置，需要把它们都填满才得到一个完整的立方体。

麻省理工公开课 - 化学原理课程节选

So, let's go back to the notes, and let's fill these in, seven electrons. Another way you could have known them was to look at Lewis' notes here, where if look at this box carefully you see there are seven dots around the cube, so there are his seven valence electrons.

那么，让我们回到讲义，把它们填进去，七个电子，还有另外一种方法可以知道这些,那就是看看路易斯的讲义这里，大家可以看到这个立方体周围有七个点,因此有七个价电子。

麻省理工公开课 - 化学原理课程节选