—— 请按键盘 空白键 开始游戏 ——

In mathematics, the simplest questions often lead to the most profound discoveries.
The energy transition is not just about replacing coal with renewables; it's about ensuring a just transition for workers and communities.
一本书是一面镜子:如果一只猿猴看进去,一个使徒几乎不可能看出去。