Where version a degrades into a single scrolling page, version B degrades into multiple pages.
版本A会退化为单一滚动页面，而版本b退化为多页面版本。
If it is a legacy version then a you are not prompted to migrate during model load and b you are warned that it is legacy version if the user attempts to migrate it manually.
如果它是一个遗留版本，那么a您将不会被提示在模型下载过程中迁移b您将会被警告这是一个遗留版本如果这个用户尝试手工迁移它。
Using the option -b (to specify the BAR file name), you can modify the target BAR file name and append a version number to it.
使用- b选项(用于指定BAR文件名称)，您可以修改目标BAR文件的名称，并在其上追加一个版本号。
"The F. B. I. may use different words to describe this tool, but make no mistake: Building a version of iOS that bypasses security in this way would undeniably create a back door," Mr. Cook wrote.
“联邦调查局也许用了另一种措辞来形容这个工具，但不要被误导：构建一个采用这种方式绕过安全屏障的iOS版本，无疑就创建了一个后门，”库克写道。
"The F. B. I. may use different words to describe this tool, but make no mistake: Building a version of iOS that bypasses security in this way would undeniably create a back door," Mr. Cook wrote.
“联邦调查局也许用了另一种措辞来形容这个工具，但不要被误导：构建一个采用这种方式绕过安全屏障的iOS版本，无疑就创建了一个后门，”库克写道。
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