trajectory curve

例句：

1. 1.The trajectory of the spacecraft is predictable.
   宇宙飞船的轨迹是可预测的。
2. 2.The trajectory of the project will be affected by various factors.
   该项目的轨迹将受到各种因素的影响。
3. 3. The trajectory of the satellite is determined by its initial velocity and gravity.
   卫星的轨迹由其初始速度和重力决定。