例句與造句

1. The octahedron is also a " rectified tetrahedron ".
2. The Hessian is analogous to the tetrahedron, like the cube is a double tetrahedron, and the octahedron as a rectified tetrahedron.
3. The regular octahedron can also be considered a " rectified tetrahedron "  and can be called a " tetratetrahedron ".
4. It's difficult to find rectified tetrahedron in a sentence. 用rectified tetrahedron造句挺難的