A prismatoid having polygons with the same number of sides as bases, and faces that are parallelograms or trapezoids.
四个
相等的平行四
；不是直角的等平行四。
A prismatoid having polygons with the same number of sides as bases, and faces that are parallelograms or trapezoids.
四个相等的平行四；不是直角的等平行四。
明：以上
句、词性
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