Wednesday marked the 50th anniversary of Martin Luther King’s "I Have a Dream" speech. On the occassion, US president Barack Obama addressed the gathered crowd from the steps of the Lincoln Memorial where Dr. King delivered his speech.
周三是马丁·路德·金“我有一个梦想”演讲50周年纪念日。这一天，美国总统奥巴马在当年马丁·路德·金发表演讲的林肯纪念堂外的台阶上发表演讲。