The setting is informal. There is a "no neckties" policy and some of the biggest global issues will be discussed over dinner and drinks between the world's two most powerful leaders. It'll be a chance for the men to build the working and the personal relationship to tackle some of the sticking points the two superpowers have already had over cyber security and trade, North Korea, Syria and the South China Sea, ___________________________ President Xi recently told a top US official that a new type of great-power relationship was required. This will be the first chance to define what shape that may take. 这是一次"不打领带"的非正式会晤.习近平和奥巴马这两位世界上最具影响力的领袖,将在晚宴中讨论几项重大的全球议题.两位领导人将有机会增进双方的工作关系和个人关系,以妥善处理诸如网络安全、两国贸易、朝鲜、叙利亚和中国南海问题这些僵持点,_________________________习主席于近日向一名美国高官透露,当今世界需要一种新型的超级大国关系.而这将是首次对此种新型关系进行定义.