竞技场的用法和样例：
例句
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竞技场古希腊、罗马的郁圆形露天运动场有进行赛马和马车比赛的椭圆形跑道
An open-air stadium with an oval course for horse and chariot races in ancient Greece and Rome. -
竞技场所举行比赛或表演的圆形角斗场
An arena where contests and spectacles are held. -
罗马竞技场是很出名的。
The Roman arena was very famous.
