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U.S. / US : 1）United States 合衆国
UN / U.N. : 1）United Nations
UK / U.K. : 1）United Kingdom
U.C. : 1）University College オックスフォード大学のカレッジの一つ
USA / U.S.A. : 1）《通例 the~》United States of America アメリカ合衆国 2）United States Army 米国[常備]陸軍
UCS : 1）《略》無条件刺激
US : 1）United States 【国名】アメリカ合衆国
U.S. / US : 1）United States 合衆国
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