He did not stock any goods at first and only provided photos and descriptions of the goods available.
起初，他只在网上提供可出售商品的照片和描述，并不备货。
However, the book list and book details WSDL 2.0 descriptions and the sample documents from Listing 1 and Listing 2 are available in the Downloads section at the end of this article.
然而，本文结尾的下载部分提供了图书列表和图书详细信息服务的WSDL 2.0描述以及清单1和清单2中的相同文档。
The product descriptions help you differentiate between the no-charge capabilities and the additional capabilities that are available for purchase.
这些产品描述可以帮助您区分免费功能和需要支付费用的额外功能。
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