正Cafiu'sSecretary-GeneralNiJianattendedUNSustainableDevelopmentConference(Rio+20)heldinRiodeJaneiro,BrazilfromJune16to21.Thisisanotherlarge-scale,high-leveleventinglobalsustainabledevelopmentafterthe1992UNEnvironmentandDevelopmentConference.The
国际交流:英文版
2012年2期