You can then refinesearch results by using search scopes, and by defining membership to the search scope with scope rules.
接着,我们还可以使用搜索范围来细化搜索结果,并通过范围规则来定义范围中的成员。
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Learning machine: Bing lets users refinesearch results (top), producing images that better match a search term (middle). New searches will then produce better initial results (bottom).