研究目的：确定椎间盘退变模型中的分子变化，评估本研究模型中退变发生的机制。
Objective. To determine the molecular changes occurring in a disc degeneration model, evaluating the mechanism through which the degeneration develops in this model.
本研究的理论模型及其行动实施方案是行之有效的，值得推广。
The theoretical model and the action application program of this research is effective and worth spreading.
WordNet 代表了和本专栏中心主题平行的一个重要研究方向：Thinking XML 讨论 XML 的语义，WordNet 则提供了自然语言本身语义的粗略模型。
WordNet represents an important parallel to the central theme of this column: Thinking XML covers semantics in XML; WordNet provides a sketchy model of the semantics of natural language itself.
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