Focus on the pronunciation of arena
English definition of “arena”
/əˈri·nə/ n [C]
› a central, level area for the performance of sports or entertainment, having raised seats around it from which people can see the activities, or a building containing the seats and performance area: a sports arena › An arena is also a particular activity, esp. one that involves competition and gets a lot of public attention: She entered the political arena as a young woman.