—— 请按键盘 空白键 开始游戏 ——

对于系统,翻版的模拟是在控制图中添加一个创建循环的边,而不仅仅是一个附加节点。
You can't run a business, or anything, on a theory.
The most important property of a program is whether it accomplishes the intention of its user.
We must always be learning, because the field of computing is always evolving.
The secret of being miserable is to have leisure to bother about whether you are happy or not.