动态驾驶样本用推近和背景运动模糊制造速度感。提示词中把“zoom in”与主体速度分开写，后期再用剪辑速度控制情绪，避免相机运动和主体运动互相覆盖。 A dynamic driving sample combines a zoom-in with background motion blur to create speed. Describe the camera zoom and subject speed separately, then control emotion in the edit instead of letting both motions compete.