| 单词 | ellipse |
| 释义 | ellipse n. a regular oval, traced by a point moving in a plane so that the sum of its distances from two other points is constant, or resulting when a cone is cut by a plane which does not intersect the base and makes a smaller angle with the base than the side of the cone makes (cf. HYPERBOLA). Etymology: F f. L ellipsus f. Gk elleipsis f. elleipo come short f. en in + leipo leave |
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