—— 请按键盘 空白键 开始游戏 ——

Swim upstream. Go the other way. Ignore the conventional wisdom. If everybody else is doing it one way, there's a good chance you can find your niche by going in exactly the opposite direction.
主要的义务规则是那些要求或禁止某些行为的规则。
人生好比是一次航程。