arena
Word family adjectivearenaceousarenicolousnounArenariaarenationarena
a·re·na /əˈriːnə/ ●○○ noun [countableC] 2 the political/international/public etc arena DOall the activities and people connected with politics, public life etc 政治/国际/公众等舞台 Women are entering the political arena in larger numbers. 越来越多的女性进入政界。
American economic activity in the international arena 美国在国际舞台上的经济活动
Origin arena (1600-1700) Latin “sand, sandy place”