Noun:

1. an open curve formed by a plane that cuts the base of a right circular cone

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1. This curve resembles the unifoliate hyperbola in maths.
   该曲线像数学中的单叶双曲线。
2. A hyperbola approaches but does not meet its asymptote.
   双曲线逐渐接近它的渐近线但不相交。
3. The method uses small random samples and the limits of a hyperbola.
   该方法采用了小范围随机抽样和双曲线的极限。