—— 请按键盘 空白键 开始游戏 ——

The value and utility of any experiment are determined by the fitness of the material to the purpose for which it is used.
The dairy industry must evolve to meet the demands of a changing world.
领导力是关于做出艰难的决定并坚持到底。
学习一门新编程语言的最好方法是用它写程序。