Optimal fiscal policy requires that taxes be smooth over time, as abrupt changes can distort economic decisions.
最优财政政策要求税收随时间平滑,因为突然的变化会扭曲经济决策。
States are rational actors that seek to maximize their power and security in an anarchic international system.
规模很重要,因为它改变了我们与作品的身体关系。
The best performances come from the heart, not just the voice.