—— 请按键盘 空白键 开始游戏 ——

The search for reciprocity laws is a fundamental theme in the history of mathematics.
我们今天选择的材料将成为我们明天留下的遗产。
You can’t go back and change the beginning, but you can start where you are and change the ending.
The integration of traditional farming methods with modern technology is key to success.