Read Edit View history 四面体 sìmiàntǐ tetrahedron Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 四面体/四面體 · sìmiàntǐ · tetrahedron 2026/03/04 四面体 / 四面體 sìmiàntǐ tetrahedron tetrahedron 正四面体由四个三角形面组成。 created sense Mar 4, 2026, 02:25 AM