The part of a solid,such as a cone or pyramid,between two parallel planes cutting the solid,especially the section between the base and a plane parallel to the base.是什么意思_The part of a solid,such as a cone or pyramid,between two parallel planes cutting the solid,especially the section between the base and a plane parallel to the base.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句