—— 请按键盘 空白键 开始游戏 ——

"The only way to learn mathematics is to do mathematics."
The design of algorithms is both an art and a science.
法律不是道德;不要期望它能完成只有道德才能完成的事情。
The pleasure of not being young is that you can enjoy things without wanting to possess them.
可持续性必须成为每家化工企业战略的核心——它不再是可选项。