Derby is important here, because it's used to supply items for display to home consumers browsing the online grocery store and to update the stock count of purchased items.

Derby在这里很重要，因为它用来提供商品信息，以便向浏览在线杂货店的家庭顾客显示这些信息并更新已购买商品的库存数量。

youdao

The latest generation offers e-mail and basic Web browsing so that busy users can stay in touch with the office, check flight times and get the latest stock quotes wherever they are.

CNN: Cross My Palm With Silicon