—— 请按键盘 空白键 开始游戏 ——

一本书是一个花园,一个果园,一个仓库,一场聚会,一路上的伙伴,一位顾问,众多的顾问。
A book is a garden, an orchard, a storehouse, a party, a company by the way, a counselor, a multitude of counselors.
The deepest theorems often arise from the simplest observations.