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导读：有关航空业碳排放问题的国际会议经过两天磋商22日在莫斯科结束，来自全球29国的与会代表发表联合宣言，提出了反对欧盟单方面向他国航空公司征收碳排放税的具体措施。BEIJING / LONDON - A 32-nation conference agreed that Europe

By CGTN's Han PengWang Jinzhen, the National Commissioner of the Chinese pavilion atAstana Expo 2017, has reiteratedthat the World Expo is not just a showcase of achievements from the past,but also a problem-solving