isohedral

例句：

1. 1. The crystal is isohedra, which means it has six vertices and six faces.
   这个晶体是六面体，意味着它有六个顶点和六个面。
2. 2. The shape of the crystal is isohedra, which means it has six vertices and sixfaces.
   这种晶体的形状是六面体，意味着它有六个顶点和六个面。
3. 3. The crystal structure of this mineral is isohedra, which means it has six vertices and six faces.
   这种矿物的晶体结构是六面体，意味着它有六个顶点和六个面。