The sync command will not change an existing model.

sync命令不会更改现有的模型。

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In an enterprise environment, there is usually an existing model of the domain.

在企业环境中，通常存在现有的域模型。

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Note that a new PDM is not strictly necessary, because the artifacts can be added to an existing model.

注意，新的PD M不是必要的，因为工件可以添加到现有的模型中。

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No one is suggesting an end to the existing model, just an offering of the larger-screen one alongside it.

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Similarly, when you improve an existing model, you improve five at once, assuming that the improvement is to a platform item.

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Amazon already has an extensive software infrastructure designed for linking buyers with sellers, however, and the Turk simply extends that existing model.

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