名詞 u.s.:

1. the executive and legislative and judicial branches of the federal government of the United States
   同義詞：United States government, United States, U.S. government, US Government
2. 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
   同義詞：United States, United States of America, America, the States, US, USA, U.S.A.