A CommandBar in itself provides only the dockable host, and it is up to the user to implement the menu or toolbar that imparts the CommandBar its functionality.
命令条本身只提供可停靠宿主，用户需要利用菜单或工具条来填充命令条的功能。
A CommandBar in itself provides only the dockable host, and it is up to the user to implement the menu or toolbar that imparts the CommandBar its functionality.
命令条本身只提供可停靠宿主，用户需要利用菜单或工具条来填充命令条的功能。
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