The Old Patent Office Building became part of the Smithsonian Institution in nineteen sixty-two. It is now the Smithsonian Donald W. Reynolds Center for American Art and Portraiture.是什么意思_The Old Patent Office Building became part of the Smithsonian Institution in nineteen sixty-two. It is now the Smithsonian Donald W. Reynolds Center for American Art and Portraiture.在线翻译_英语_读音_用法_例句