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单词 tetrahedron
释义
N5188736tetrahedronSpoken.0Fiction.7Magazine.11Newspaper.0Academic.18

tetrahedron

/ˌtetrəˈhedrən/
noun
(pl. tetrahedra /-drə/ 或tetrahedrons)
a solid having four plane triangular faces; a triangular pyramid
四面体。
派生词

tetrahedral

adjective
词源
late 16th cent.: from late Greek tetraedron, neuter (used as a noun) of tetraedros 'four-sided'.
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