—— 请按键盘 空白键 开始游戏 ——

真相很少纯粹,也绝不简单。
The past is a foreign country; they do things differently there.
The best victories are the ones that seem impossible.
The goal of synthesis should be to make molecules as easily as possible, not just possible.
相关性和因果关系之间的区别在实证工作中是根本性的。