That must be the oval unroofed amphitheater in Rome. It was basically a stadium with comprehensive functions.
那就是罗马
椭
型
竞技场了，基本上是综合功能体育场。
；无屋顶That must be the oval unroofed amphitheater in Rome. It was basically a stadium with comprehensive functions.
那就是罗马椭型竞技场了，基本上是综合功能体育场。
The change from the unroofed stadiums to sealed off buildings maybe the beginning that tickets were sought.
从场馆到封闭建筑转变，就可能是追求门票收入开始。
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