Most search engines will devalue pages with such messages, or with links to sites associated with spam, which means that spam can reduce your search engine optimization.

大多数搜索引擎都会将带有这类消息或提供与这类垃圾信息相关的站点链接的页面减值，这就意味着垃圾信息能减少搜索引擎的优化处理。

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The topological expansion of a network frequently involves the optimization problem of selecting proper links so that they can produce maximum profit within a given budget limit.

计算机网络结构拓扑扩展时，经常要解决这样一类优化问题：在给定预算限制下，选择一组连接，使带来的利润最大。

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Topological expansion of a computer network frequently involves an optimization problem of selecting proper links so that they can produce maximum profit within a given budget limit.

计算机网络结构在进行拓扑扩展时，经常要解决这样一类优化问题：在给定预算限制下，选择一组连接，使带来的利润最大。

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