Sustainable development requires balancing economic growth with ecological protection.
洛丽塔,我生命之光,我欲念之火。我的罪恶,我的灵魂。洛一丽一塔。
States are rational actors that seek to maximize their power and security in an anarchic international system.
不要为成功而努力,要为做一个有价值的人而努力。