—— 请按键盘 空白键 开始游戏 ——

Marine biodiversity is the foundation of our industry's future—we must protect it at all costs.
The United States should not try to spread democracy around the world.
Doubt is the artist’s most honest companion.
The pursuit of knowledge is a journey without a final destination.
数学的进步不仅仅依靠个人的努力,而是通过几代人的集体工作。