—— 请按键盘 空白键 开始游戏 ——

可持续性不是一种选择,而是我们对后代的责任。
I'm the kind of guy that'll make you call your girl up and tell her you love her.
在谷物生产中,耐心不仅是一种美德,更是必需品。
The language of mathematics is universal, transcending cultural and linguistic barriers.