A producing Web service maintains subscription lists and looks them up to match the topic in a list and the topic in the notification request.

生产Web服务负责维护订阅列表并在其中查找它们，以便与列表中的主题和通知请求中的主题相匹配。

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The topic in the subscription list should match the topic in a notification request from a consuming Web service.

订阅列表中的主题应该与来自消费 Web 服务的通知请求中的主题相匹配。

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As with the topic keyword web service, all you have to do is supply an apikey and URL that contains the content you want to analyze, as in Listing 12.

跟主题关键词web服务一样，所有您必须做的事情就是提供一个apikey和URL(包含您想要分析的内容)，如清单12所示。

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