—— 请按键盘 空白键 开始游戏 ——

最好的学习方式就是从错误中吸取教训。
无偿工作的价值在经济衡量中常常不可见,但它却是社会的支柱。
"The world is not a wish-granting factory."
I don't want to express anything. I just want to see.