triacontanae

例句：

1. 1. The celebration of the tricentennial anniversary of the city's founding was a grand event.
   庆祝城市成立三世纪纪念日是一个盛大的活动。
2. 2.The tricentennial celebration included a parade and a concert by the local symphony orchestra.
   三世纪庆典包括一场游行和当地交响乐团的音乐会。
3. 3.The tricentennial celebration also featured a display of historical artifacts from the region.
   三世纪庆典还展示了该地区的历史文物展示。