program visualizer的用法和样例：
例句
- Perhaps sensing my ineptitude, the program generated a second shooter who appeared on my display as a flickering soldier.
也许感应到我的笨拙，于是程式送来了另一名射击手，我的显示器上出现了一名忽隐忽现的士兵。 - Rather than the one-way cycle of information from the keyboard to the program to the video display, the user directly interacts with the objects on the display.
用户直接和显示器上的对象交互，而不仅仅是从键盘到程序再到视频显示器的单一方向的信息循环。
