ellipse

美音音标: [ɪ'lɪps] ellipse
英音音标: [ɪ'lɪps] result.0.expl|add:"

同义
ellipse oval
词性
n
解释
a closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it
示例
the sums of the distances from the foci to any point on an ellipse is constant