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。
In each region, one or two tags are embedded as the nodes where you will create a chart or radio button group.
该示例应用程序还为用户提供一组单选按钮，以便从一种语言切换到另一种语言。
The sample application also provides the user with a group of radio buttons as a means to switch from one language to another.
第一个是单选按钮组的字符串标签，第二个是一个文本标签。
The first is a string label for the radio button group, and the second is a text label.
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