例句與造句

1. The tessellations formed in this way from the order-2, order-3, and order-4 permutohedra, respectively, are the apeirogon, the regular hexagonal tiling, and the bitruncated cubic honeycomb.
2. Permutohedra are sometimes also called permutation polytopes, but this terminology is also used for a related polytope, the Birkhoff polytope, defined as the convex hull of 1-1 correspondence with the permutations of some set.
3. It's difficult to find permutohedra in a sentence. 用permutohedra造句挺難的