—— 请按键盘 空白键 开始游戏 ——

"One must be an inventor to read well. There is then creative reading as well as creative writing."
游戏是儿童的工作。
Science is not just about discovery, but about the joy of understanding.
安全不是功能,而是基础。
一个测量可用的常识:手臂伸直两测指尖的距离就是你的身高。