As the most universal and most representative organization in the world,the United Nations must play the central role. 联合国作为世界上最具普遍性和代表性的组织，必须发挥核心作用。
During my years at USTR, I worked closely with Congress and appreciate its central role in regulating foreign trade. 在美国贸易代表办公室，我与国会联系密切，深感国会在管理对外贸易中的核心作用。
