in a way that is very obvious and is an attempt to make people notice you, especially to notice your money or expensive possessions

The room was ostentatiously decorated in white and silver. 房间用白色和银色装饰，华丽又招摇。

He took out his gold watch and laid it ostentatiously on the table in front of him. 他拿出金表放在面前的桌子上向大家炫耀。