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

与大数销售预产品零售商不同，宜许必须由客户自己。

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

第一台商业上成功用电脑是 Altair 8800，它有两种版本：预和套件。