科研之友
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摘要
<正>About 2,000 years ago,Rome(罗马)was a very important(重要的)city.There were many great buildings in the city.One of the most famous was the Colosseum(罗马斗兽场).the Most Famous Stadium世界上最著名的竞技场A stadium(运动场)is a place for sports.The Colosseum is a large stadium.It is in the center of Rome.It was about 20,000 square meters(平方米),as large as 3 soccer fields(足球场). It was big enough to hold
