extravagance

她在派对上的奢侈做派让所有人都感到不舒服。

Her ___extravagance at the party made everyone feel uncomfortable.

预算紧张的团队认为订购顶级香槟是一种奢侈行为。

Ordering premium champagne was considered an ___extravagance by the budget-conscious team.

酒店大堂的水晶吊灯是一种华丽的铺张，但并不实用。

The crystal chandelier in the hotel lobby is a beautiful ___extravagance, though not very practical.