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零售商不同，宜的须由客户自己组装。

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

第一款商业上成功的用电脑是阿尔泰8800，它有两种版本：预组装版和套件版。