—— 请按键盘 空白键 开始游戏 ——

"The essence of mathematics lies in its freedom."
Profitability and responsibility must go hand in hand.
This was a very short visit, but it plunged the little prince into deep dejection.
惩罚教会的是恐惧,而不是责任感。
每个孩子都应该在他们读的故事中看到自己。