—— 请按键盘 空白键 开始游戏 ——

杀死一个幽灵比杀死一个现实要困难得多。
Overfishing is a failure of management, not a failure of the ocean.
The laws of physics are the language in which the universe writes its story.
"In times of uncertainty, clear communication and decisive action are more important than ever."
The truth is, I don't know what I would have done without mathematics.