—— 请按键盘 空白键 开始游戏 ——

We must be guardians of the ocean, not plunderers.
The art of living is to know when to hold fast and when to let go.
我总是尽量保持谦逊并尊重我的对手。
解释:辅与车互相依存,嘴唇没有了,牙齿就要受寒。
We must strengthen international cooperation to jointly address the challenges of energy security and climate change.
For systems, the analogue of a face-lift is to add to the control graph an edge that creates a cycle, not just an additional node.