North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776
the executive and legislative and judicial branches of the federal government of the United States
例句
用作名词 (n.)
He went on a speaking tour of the United States. 他去美国作巡回演讲。
美
[ju'naɪtɪd s'teɪts]
