In this case, however, only one of the extensions should define a value for the label.

在这种情况下，扩展点中只有一个可以为这个标签定义一个值。

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Once a user has defined the security label components, the user can then define the security labels and associate that security label to a user or to a security row (s).

在定义了安全标签组件后，用户就可以定义安全标签，并将安全标签与一个用户或一个(或多个)安全行相关联。

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These extension points define the label for the actions and point the platform to the code that runs when the actions are selected from the menu.

这些扩展点定义动作的标签，并将平台指向当从菜单中选择动作时所运行的代码。

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The Obama campaign had telegraphed its intention to define Romney as a warmonger, but when Obama tried to stamp the label on him, the president found himself punching air.

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