track movement

• 运动轨迹

track movement的用法和样例：

例句

1. The Brownian movement of pollens also shows the fractal characteristics.
   花粉的布朗运动轨迹也具有分形特征。
2. Diffusion-tensor imaging measures the direction of movement of water molecules.
   扩散张量成像技术可以测量水分子的运动轨迹。