parabolic operator

例句：

1. 1. The parabolic path of the astronaut's journey is always a stark contrast to the straight line.
   宇航员旅程的抛物线路径总是与直线形成鲜明对比。
2. 2.The parabolic shape of the planet is due to its rotation around its axis.
   行星的抛物形是由于其绕轴旋转形成的。
3. 3.The parabolic flight path of the space shuttle is designed to maximize fuel efficiency.
   航天飞机的抛物形飞行路径设计是为了最大化燃料效率。