Artificial intelligent assistant

arena

arena
/əˈri:nə; ə`rinə/ n
1 level area in the centre of an amphitheatre or a sports stadium 圆形剧场或运动场中心的平地.
2 (fig 比喻) place or scene of activity or conflict 活动或斗争的场所或场面
    the political arena 政治舞台.

牛津英汉双解词典

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