U.
abbr. 单位（United）；联合（Union）
例句
The U. N. World Food Programme confirmed the abduction of eight of its workers in northern Darfur.
联合国世界粮食计划署证实其８名工作人员在达尔富尔北部遭到绑架。
《柯林斯英汉双解大词典》
The U. S. envoy was recalled to Washington.
该美国特使被召回了华盛顿。
Dave made a U-turn on North Main and drove back to Depot Street.
戴夫在北干道掉头，把车开回了第伯街。
