下列情形中行为人不负:welfare states demand progressive taxes怎么翻译?

welfare states demand progressive taxes怎么翻译? welfare states demand progressive taxes怎么翻译 ? Child Welfare Directors Association是什么? United States of America centralist states是什么意思？ Unitde States是什么意思？ happiness和welfare之间的区别是什么？ united states和the united states的区别 How many states are there in the United States? the States 的中文意思