—— 请按键盘 空白键 开始游戏 ——

There is no solitude in the world like that of the big city.
日常生活中的家事,儿童都非常喜欢参与。
The interplay between discrete and continuous mathematics is where some of the most interesting problems lie.
The original idea of the web was that it should be a collaborative space where you can communicate through sharing information.
你遇到的每个人都在经历一场你看不见的战斗。请善良以待。