Unlike most furniture retailers that sell products preassembled, many of Ikea's pieces have to be built by their customers.

与大数销售预装产品的家具零售商不同，宜家的许家具必须由客户自己组装。

The first commercially successful home computer was the Altair 8800, which sold in two versions: preassembled and as a kit.

第一台商业上成功的家用 Altair 8800，它有两种版本：预装和套件。