extravaganza------盛大的活动（名词）

英文释义
(noun) An impressive social event with an abundance of food, musical performances, and decorations.

例句
The opening of our new company headquarters was a memorable extravaganza with fireworks, famous singers, fine food, an orchestra, gifts for everyone, and speeches by our company's founders.
我们新的公司总部的开业是一场盛大的活动，观赏烟花，观看知名歌手演出，品尝精致食物，每个人都有礼物，公司的创始人还发表了演讲。