网上书店的建立可以大大减少图书销售中的中间环节，节省大量的人力、物力，并且能够提供更多的书目信息。

Building the online bookstore can induce middle link in book selling and save a lot of human and non-human resources besides offer more bibliography information.

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而销售系统的建立可以大大减少购买的中间环节，可节省大量的人力、物力，并且能够提供更多更新的产品信息。

However, sales system may reduce the middle link of purchase and a lot of manpower and physical resource, and offer more and latest information of product.

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