其中包含元素序列，包括服务上允许的每个查询参数，即作者、标题、出版商、主题和语言。
It contains a sequence of elements, including each of the query parameters you allow on the service, namely author, title, publisher, subject, and language.
如果标题只能集中于一种产品或服务，就选择能带来最大利润的一种。
If your headline must focus on just one of your products or services, choose the one that is most profitable.
接下来，提供服务器名称和服务器标题。
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