amphtrac

例句：

1. 1.The amphitheatre was built to hold the audience and performers in a circular shape.
   竞技场是圆形的，用于容纳观众和表演者。
2. 2.The amphitheatre is an important part of the Roman amphitheatre system.
   竞技场是罗马竞技场系统的重要组成部分。
3. 3.The amphitheatre has been used for various purposes, including entertainment and education.
   竞技场被用于各种目的，包括娱乐和教育。