—— 请按键盘 空白键 开始游戏 ——

每拖延一年,问题就会变得更难解决。
Laws, in their most general signification, are the necessary relations arising from the nature of things.
教师必须既是学生的研究者,也是学科的研究者。
I always try to push myself to the limit, to see how far I can go.