最优财政政策要求税率随时间平稳变化,仅对政府支出的永久性变化作出反应。
海洋不是无底洞,资源有限,敬畏自然才能长久发展。
Memory is not about the past, it's about the present.
世界是一面镜子,它向你展示你带给它的东西。
Challenges are what make us grow; embrace them with courage and determination.
To live is the rarest thing in the world. Most people exist, that is all.