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

与大数销预装产品的家具零同，宜家的许家具必须由己组装。

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

第一台业上成功的家用电脑是 Altair 8800，它有两种版本：预装和套件。