A social system whereby the state assumes primary responsibility for the welfare of its citizens, as in matters of health care, education, employment, and social security.福利制度：国家为其公民的福利，如在医疗、教育、就业和社会保障等方面，承担基本责任的社会制度
A nation in which such a system operates.福利国家：有此种制度运行的国家