I Have a Dream我有一个梦想Martin Luther King, Jr.I am happy to join with you today in what will go down in history as the greatest demonstration for freedom in the history of our nation.今天我很高兴和大家一起,参加这次将成为我们国家历史上为了争取自由而举行的最伟大的游行示威集会。Five score years ago, a great American, in whose symbolic shadow we stand today, signed the Emancipation Proclamation.一百多年前,一位伟大的美国人-今天我们就站在他的象征性的身影之下-签署了解放宣言。This momentous decree came as a great beacon light of hope to millions of Negro slaves who had