diadromy

例句：

1. 1. 天体动力学
   astrodynamics
2. 2.天体物理学
   astrophysics
3. 3. 天体力学
   kinematics of celestial bodies
4. 1. The study of the motion and interaction of celestial bodies is known as kinematics.
   研究天体的运动和相互作用被称为天体运动学。
5. 2. The principles of how stars, planets, and other celestial bodies move are fundamental to understanding the universe.
   了解宇宙的基本原理是理解恒星、行星和其他天体运动的基石。
6. 3. In kinematics, the study of the motion of objects in space is crucial for predicting their trajectories.
   在天体运动学中，研究物体在空间中的运动对于预测其轨迹至关重要。