An interior decorator designs and decorates the interior of a room or building.室内装饰家设计，装饰房间或建筑物的内部。The previous owners of the house had hired an expensive interior decorator.原先的屋主高薪聘请了一位室内设计师。He was rapidly translating himself into an interior decorator.他正很快使自己变成了一位室内装潢师。She became an interior decorator. 她成为一名室内装饰设计师。