A 'parabola' is a symmetrical open plane curve made up of all the points equidistant from a fixed straight line within the plane and from a fixed point within the plane.
“parabola”这个名词是指（数学）抛物线。
| Front | parabola [para-;bol;-a] |
|---|---|
| Back | a. [数]抛物线 |
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