No unauthorized changes be made.

不得擅自修改。

《新英汉大辞典》

Enforced security, on the other hand, prevents unauthorized people from making changes by separating enterprise models from project models and by separating project models from each other.

加强的安全性，另一方面，通过将企业模型与项目模型隔离开来，以及将项目模型相互隔离开来，防止未授权的人作出变更。

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Help him gather the information he needs to complete his report and avoid coworkers who want to make unauthorized changes.

帮助他收集他所需要的资料，以完成他的报告，并避免同事谁不想使未经授权的更改。

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