—— 请按键盘 空白键 开始游戏 ——

The study of L-functions is a reflection of the unity of mathematical knowledge.
The only thing we have to fear is fear itself.
In the oil and gas sector, technology is the key to unlocking efficiency and reducing environmental impact.
如果开采技术不优先考虑环境可持续性,那么创新就毫无意义。
"The novel is a very forgiving form. It can accommodate almost anything."