This Sunday, people around the world will witness two teams as they battle for the championship of American professional football. The Baltimore Ravens and the San Francisco 49ers are in New Orleans, Louisiana, to prepare for the 47th Super Bowl. Over one hundred million people are expected to watch the game on television, with computers or other devices.本周,世界各地的人们将见证两支球队争夺美国职业橄榄球总冠军.巴尔的摩乌鸦队和旧金山49人队正在美国路易斯安那州新奥尔良市备战第47届超级碗决赛.预计会有超过1亿观众通过电视、电脑和其它设备观看比赛.
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