—— 请按键盘 空白键 开始游戏 ——

可持续性不是一种选择,而是煤炭行业的必需品。
最好的小说比任何新闻报道都真实得多。
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
Science is a journey, not a destination.