—— 请按键盘 空白键 开始游戏 ——

Time is a river that flows backward as much as it flows forward.
制造业的领导力意味着在变化发生之前预见变化。
Sometimes the simplest questions lead to the deepest theories.
"Mathematics is not a spectator sport."
我一直是个注重隐私的人,但我明白这是不可避免的。