1N-COUNT 运动场;竞技场;体育场 An arena is a place where sports, entertainments, and other public events take place. It has seats around it where people sit and watch. 运动场;竞技场;体育场
2N-COUNT 活动领域;舞台 You can refer to a field of activity, especially one where there is a lot of conflict or action, as an arena of a particular kind. 活动领域;舞台
He made it clear he had no intention of withdrawing from the political arena.
他清楚地表明他无意退出政治舞台。
Oil speculation proved a natural arena for his skills.