英语翻译
Some of the built-in furniture remains,while other restorations have included replacement pieces created using his plans.
上下文：
He was one of the first architects to design and supply custom-made,purpose-built furniture and fittings that functioned as integrated parts of the whole design,and he often returned to earlier commissions to redesign internal fittings.Some of the built-in furniture remains,while other restorations have included replacement pieces created using his plans.His Prairie houses use themed,coordinated design elements (often based on plant forms) that are repeated in windows,carpets and other fittings.