—— 请按键盘 空白键 开始游戏 ——

The city is like a great palimpsest, a manuscript that has been written and rewritten over the centuries.
The path to net-zero is not easy, but it is necessary for our survival.
电子并非一个简单不可分割的实体,而是一个复杂系统,其行为只能通过量子力学定律来理解。