政策规则优于自由裁量,因为它们消除了时间不一致性问题。
过去是一个跟随我们的影子,一个困扰我们的幽灵。
"Hope is the thing with feathers that perches in the soul."
The future of petrochemicals lies in high-value, low-carbon products.
野外要求尊重。如果你给予它,它也会回报你。