In each region, one or two tags are embedded as the nodes where you will create a chart or radio button group.

在每个区域中，有一个或两个标记被作为节点嵌入，您可以在其中创建图表或单选按钮组。

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For example, if the user is asked to select one item from a list, a Web browser might present the list as a standard radio button group.

比方说，如果要求用户从列表中选择一项，Web浏览器可以用标准的单选按钮组来表示列表。

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Defining a radio button group tells the user, "Here is a set of choices from which you can choose one and only one."

定义单选按钮组将告诉用户：“这里有一组选项，您可以从中选择一个且只能选择一个。”

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Defining a radio button group tells the user, "Here is a set of choices from which you can choose one and only one."

定义单选按钮组将告诉用户：“这里有一组选项，您可以从中选择一个且只能选择一个。”

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