The first two stages interpenetrate each other.

前个互渗透。

However, if one of the particles, for example, is concave, like a crescent moon, then you can imagine that two adjacent particles could interpenetrate more tightly or fit more snugly with one another.

但是，例如，如果其中个粒子是凹的，就像新月样，那么您可以个邻的粒子可以更紧密地互渗透或更紧密地互配合。