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

与大数销售预产品的售商不同，宜的许必须由客户自。

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用电脑是 Altair 8800，它有两种版本：预和套件。