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ellipse英英释意 - 繁体字在线
ellipse
英 [ɪ'lɪps]
美[ɪ'lɪps]
英英释意
- 1. a closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it;
- "the sums of the distances from the foci to any point on an ellipse is constant"