Agricultural risks and prevention mechanism during the transitional period 并列题名：Agricultural risks and prevention mechanism during the transitional period Research on the urban agglomeration mechanism during the transitional stage of China 并列题名：Research on the urban agglomeration mechanism during the transitional stage of China Study of political elites in Macau during the transition period Cultural idea and the artistic poser in the transformation period 并列题名：Study of political elites in Macau during the transition period Literary reflection of the transitional period Study on harmonious labor relations in the transitional period