—— 请按键盘 空白键 开始游戏 ——

You can't cross the sea merely by standing and staring at the water.
In the age of big data, the mathematical principles of data structures and algorithms have become more critical than ever.
Art is a vehicle for communication.
孩子不是涂色本,你不能随心所欲填上自己喜欢的颜色。