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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。
技巧不是属于我们自身的东西,所谓的优劣智愚不过是教育的产物,但是人的精神境界却有优劣区别。
Independent innovation is not working behind closed doors, but mastering core technologies through open cooperation.
A writer must be willing to be vulnerable.