parabola

[数] 抛物线英释中释na curve in the shape of the imaginary line an object makes when it is thrown high in the air and comes down a little distance away

1 So, we should draw maybe this downward parabola..我们可以画出这样的开口向下的抛物线。

2 From this one, you would not expect it to behave like a parabola..从这一次，你不会期待它，如抛物线般运动。

3 It is perfectly reasonable to immediately come to that conclusion because of the symmetry of the parabola..很理所应当的,由于抛物线的对称,立刻就会想到这个结论。