名词
中文翻译：四边形
同义词：
['quadrilateral', 'quadrilateral']
例句：
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1.The tetrahedral shape of the building is very unique.
这座建筑的四面体形状非常独特。
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2. The quadriceps muscle is responsible for bending the knee.
股四头肌负责弯曲膝盖。
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3.The tetrahedron has four equal sides and four right angles.
四面体有四个相等的边和四个直角。