adjective
R
Shaped like a pyramid with a triangular base and three sides, or having four faces.
The carbon atom forms bonds that create a tetrahedral shape.
碳原子形成键，创造出四面体形状。
R
Involving or relating to four elements or parts.
The tetrahedron is a basic shape in geometry with four triangular faces.
四面体是几何学中的一种基本形状，有四个三角形面。
translation
四面体的, 四元的