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单词 tetrahedron
释义 tetrahedron
n. (pl. tetrahedra or tetrahedrons) a four-sided solid; a triangular pyramid.
Derivatives
tetrahedral adj.
Etymology: late Gk tetraedron neut. of tetraedros four-sided (as TETRA-, -HEDRON)
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更新时间:2025/3/10 16:08:04