这个站点包含无数列表，当商铺停业而不再更新信息时，更新信息的工作就落在顾客头上。
The site contains millions of listings, and when owners close without updating their profile, the job falls to customers to keep information current.
一旦卖家所添加的链接与顾客搜索的关键词相吻合，他的商品就会出现在网站的推荐列表中。
When customers search for a specific word that the seller has a link to, the seller's products will appear on a list of recommendations.
考虑一个场景：一个顾客购物订单被存储在两个表中：ORDER和ORDER_ITEMS, ORDER中包含订购的总数，而ORDER_ITEMS中则包含订购的每一项商品的列表。
Consider a scenario where a customer purchase order is stored in two tables: order with the order summary and ORDER_ITEMS with the list of items for each order.
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