—— 请按键盘 空白键 开始游戏 ——

作品是一种地图绘制。
I cannot fix on the hour, or the spot, or the look, or the words, which laid the foundation. It is too long ago. I was in the middle before I knew that I had begun.
Paper has been the carrier of human knowledge for centuries. Our duty is to ensure it continues for centuries more.
The ethical implications of gene editing must be considered at every step.
计算复杂性的美在于它能够揭示问题的固有难度,而不管用于解决这些问题的具体算法是什么。