名词
中文翻译：四面体系统
同义词：
['tetrahedron', 'tetrahedron']
例句：
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1.The tetrahedron is a shape with four equilateral triangles.
四面体是一种有四个等边三角形的几何形状。
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2. The tetrahedron is used in many engineering applications.
四面体在许多工程应用中被使用。
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3. The tetrahedron is also known as the icosahedron.
四面体也被称为十二面体。