—— 请按键盘 空白键 开始游戏 ——

靠近水边楼台,能先看到月亮的投影;迎着阳光的花木,光照好发芽就早。
安全是最大的效益,事故是最大的浪费。
A good algorithm is like a sharp knife—it does exactly what it is supposed to do with a minimum of applied effort.