US President Barack Obama smiles as cadet Cameron Welicka (L) of Woodbridge, Virginia, and his father, Cmdr Valerian Welicka, celebrate at the US Coast Guard Academy commencement exercises in Leamy Hall Auditorium in New London, Connecticut May 18, 2011. [Photo/Agencies]

Kate Middleton and her father Michael, arrive at Westminster Abbey, for Kate's marriage to Britain's Prince William, in central London April 29, 2011. [Photo/Agencies]

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（中國日報網英語點津 編輯：陳丹妮）