Why it's unique: Located in steel City, Mellon arena proudly boasts the world's largest stainless steel retractable dome roof, the first retractable roof for a major indoor sports arena.
在钢铁城匹兹堡，梅隆竞技场号称拥有世界上最大的、可伸缩性不锈钢圆形屋顶，是首个用于大型体育竞技场的此类屋顶。
Why it's unique: Located in steel City, Mellon arena proudly boasts the world's largest stainless steel retractable dome roof, the first retractable roof for a major indoor sports arena.
在钢铁城匹兹堡，梅隆竞技场号称拥有世界上最大的、可伸缩性不锈钢圆形屋顶，是首个用于大型体育竞技场的此类屋顶。
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