“使缓慢地移动”可以用英语表达为 "cause to move slowly" 或 "make (something/someone) move slowly"。
例如：
The strong wind caused the leaves to move slowly across the ground.（大风使树叶缓慢地在地面上移动。）
I tried to make the toy car move slowly by adjusting the gear.（我试图通过调整齿轮让玩具车缓慢移动。）