In these catalogs, the concepts aren't simply metadata attributes, or headings in a list of choices, but information-rich reference points for finding knowledge resources.
在这些目录中，概念并非只是元数据的属性，或者是标目的一种形式，它是包含很多信息的参照点，人们可以借由它发现知识资源。
Network optimization is a high-tech the daily maintenance, optimization of personnel required theoretical knowledge is not only deep, but also rich practical experience in network maintenance.
网络优化工作是一项技术含量较高的日常维护工作，要求优化人员不仅有精深的理论知识，还需要丰富的网络维护实践经验。
In order to determine the cause of the malfunctions, not only needed to have rich theoretical knowledge and practical experience, but also needed to have a certain practical method.
为了确定故障原因，不仅需要丰富的理论知识和实践经验，而且还必须掌握一定的方法。
In order to determine the cause of the malfunctions, not only needed to have rich theoretical knowledge and practical experience, but also needed to have a certain practical method.
为了确定故障原因，不仅需要丰富的理论知识和实践经验，而且还必须掌握一定的方法。
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