虽然增加了开销，但目录辅助系统提供了一些在口头或简单的聚合环境中不易完成的高价值功能。
Despite the increased overhead, directory assistance systems provide a set of high-value functionality which is not easily accomplished within the confines of verbal or simple aggregate environments.
同目录辅助和其它第三方供应商一样，UDDI系统所基于的系统化资源库提供了包括高级搜索功能在内的许多高级功能。
Like directory assistance and other third-party providers, UDDI systems are based upon organized repositories which provide many high-level functions, including advanced searching capabilities.
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