motion trail的用法和樣例：
例句
- Different branches interact with each other, and can change the motion trajectories of the investigated points.
不同枝條之間存在相互的影響，并能改變考察點(diǎn)的運動(dòng)軌跡。 - For the purpose of simulating aerodynamically determined body motion, the governing equations of rigid body dynamics are coupled in the overall solution algorithm.
本文還研究了剛體動(dòng)力學(xué)方程與流動(dòng)方程的耦合求解方法，用于模擬由氣動(dòng)力決定的物體運動(dòng)軌跡。
