同义词
1)aged-dependency ratio,老年人抚养(比)率2)the ratio between working and retired population,老年抚养比3)aged dependency ratio (population 65 years plus pided by population 15 to 64 years),受抚养老年人口比4)Theoretical Old Support Ratio,理论老年抚养比5)Actual Old Support Ratio,实际老年抚养比6)Financially Support the Elderly,老年人口抚养
