—— 请按键盘 空白键 开始游戏 ——

Sustainability isn't an option anymore—it's a necessity for any business that wants to thrive in the future.
可持续发展不再是可选项,而是任何希望在未来蓬勃发展的企业的必需品。
一滴墨水,可以唤起千百万人的思想。
States are rational actors that seek to maximize their relative power in order to ensure their survival in a competitive international system.