Research on theory and practice of city-area economy 并列题名：Research on theory and practice of city-area economy Research on the theory and practice of community correction Theory and practice of circular economy 并列题名：Theory and practice of circular economy Research on the theory and practice of community education 并列题名：Research on the theory and practice of community correction Theory and practice of digital economy 并列题名：Theory and practice of digital economy 并列题名：Research on the theory and practice of community education