the United States of America美利堅(jiān)合眾國(guó)The United States of America is commonly abbreviated to U.S.A..美利堅(jiān)合眾國(guó)常被縮略為U. S. A..The president was asked to give a short talk on his visit to the United States.校長(zhǎng)應(yīng)邀簡(jiǎn)短談?wù)勗L美情況....