—— 请按键盘 空白键 开始游戏 ——

It is India that gave us the ingenious method of expressing all numbers by means of ten symbols, each symbol receiving a value of position as well as an absolute value.
La tradición es importante, pero también hay que saber evolucionar.
The gratitude of every home in our Union goes out to the brave men who have fought and died in the service of our country.
市场永远在变,唯有坚持品质才能立于不败之地。
I don't think you can ever be too prepared.
The best way to learn mathematics is to do mathematics.
可持续性必须是我们水产养殖每一个决策的基石,否则我们可能会失去赖以生存的资源。