旅游公司每年持续地从这些衍生模型中获取数十亿美元。

Travel companies continue to derive billions of dollars annually from these and derivative models.

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定期性的更新包含的变更，一般只会向衍生模型的客户提供高的价值。

Periodic updates typically contain only those changes that provide high value to clients and customers of the derivative models.

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在分析现有产品平台衍生模型的优缺点的基础上，建立了基于细分市场、技术路线规划、时间等因素的产品平台衍生模型。

Based on analyzing the good qualities and shortcoming of product platform planning model, the paper founds the model of platform leveraging based on market, technology roadmap and time.

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We ended the day with Bohr's model of the atom, which derived from the conceptualization of Rutherford.

那天课的结尾我们讲了从卢瑟福的概念中，衍生出来的波尔的原子模型。

麻省理工公开课 - 固态化学导论课程节选