名詞 amphitheatre:

1. a sloping gallery with seats for spectators (as in an operating room or theater)
   同義詞：amphitheater
2. an oval large stadium with tiers of seats; an arena in which contests and spectacles are held
   同義詞：amphitheater, coliseum

1. Some famous amphitheatres were built by the Romans.
   一些著名的競技場都是羅馬人修建的。