—— 请按键盘 空白键 开始游戏 ——

The universe is a vast and complex system, and understanding it requires both theoretical insights and observational evidence.
粮食安全的未来就在波涛之下,我们必须负责任地利用它。
在分子水平上理解疼痛为靶向治疗打开了大门。
Collaboration between governments, businesses, and society is essential to meet the dual challenge of energy demand and climate change.