单词 | tetrahedron |
释义 | tetrahedron tetrahedron /ˌtet.rəˈhiː.drən/ noun [C] (PLURAL tetrahedrons, PLURAL tetrahedra /-drə/ ) SPECIALIZED ► F0 a solid shape whose four surfaces are trianglesThesaurus+: ↑Geometrical shapes , ↑Spherical, circular and annular objects |
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