—— 请按键盘 空白键 开始游戏 ——

后悔是我们喝下的毒药,却希望别人会死。
真正的力量来自于克服那些我们认为无法逾越的障碍。
I think it's rarely about what you actually learn in class—it's mostly about what questions you ask yourself.
The best way to learn mathematics is to do mathematics.