—— 请按键盘 空白键 开始游戏 ——

The most important property of a program is whether it accomplishes the intention of its user.
解释:了解古代不了解现在,称为愚昧无知,那么儒生就只能称作愚昧无知的人了。
Model checking is a powerful tool for verifying the correctness of hardware and software systems.