Move the object forward along its z axis 1 unit/second.
//沿着z轴1单位/秒，向前移动物体
transform.Translate(Vector3.forward * Time.deltaTime);
// Move the object upward in world space 1 unit/second.
//在世界坐标沿着y轴1单位/秒，向上移动物体
transform.Translate(Vector3.up * Time.deltaTime, Space.World);