—— 请按键盘 空白键 开始游戏 ——

We need to be vigilant about the security of the Internet.
"Science is not just a discipline; it's a way of thinking."
如果购买普通股时工作做得正确,那么卖出它的时间几乎永远不会到来。
The greatest theorems often start as simple conjectures, born out of intuition.
有时候你必须迷失自己,才能找到自己。