Certain reorder operations may cause the target model to become invalid if they violate the UML2 specification.

特定的重新排序操作可能会导致目标模型变得无效，如果它们破坏uml2规则的话。

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As you edit the topology, it is continuously evaluated to see if any configuration choices have become invalid.

当您在编辑拓扑时，会不断对拓扑进行评估，以查看是否有任何选择变为无效。

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If you ever adjust that file system, the sector list may become invalid, resulting in GRUB's inability to boot.

如果您调整过该文件系统，扇区列表将会无效，导致GRUB不能启动。

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"The fact that a foreign national was able to re-enter the U.S. with what appeared to be a valid student visa, while Customs and Border Protection officers were unaware that his visa status had become invalid, represents a serious hole in our national security, " McCaul told CNN.

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