use unity set a beutiful ball game 就是说我用unity引擎 写了一个小球可以随便走的程序 然后在unity引擎里面我加入了一堵墙并给它赋予了碰撞盒 然后小球可以走并且可以被墙阻挡
That means I wrote a program with Unity that allows small balls to walk freely Then I added a wall to the Unity engine and assigned it a collision box Then the ball can walk and be blocked by the wall