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 States的用法和样例:
例句
He went on a speaking tour of the United States. 他去美国作巡回演讲。
America had the largest mercantile marine. 美国当时拥有最大的商船队。