The change from the unroofed stadiums to sealed off buildings maybe the beginning that tickets were sought.
场馆到封
的建筑的
，
可能是追求门票收入的开始。
的；无屋顶的The change from the unroofed stadiums to sealed off buildings maybe the beginning that tickets were sought.
场馆到封的建筑的，可能是追求门票收入的开始。
That must be the oval unroofed amphitheater in Rome. It was basically a stadium with comprehensive functions.
那是罗马的椭圆型竞技场了，基本上是综合功能的体育场。
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