To learn about some of the different kinds of view groups used for a layout, read Common Layout Objects.
欲了解其它用于布局的不同种类的视图组，请参阅普通布局对象。
The common area of two or more layout objects that overlap each other partially or fully on the presentation medium.
在表示媒体上部分或完全重叠的两个或多个布局客体的公共区域。
The common area of two or more layout objects that overlap each other partially or fully on the presentation medium.
在表示媒体上部分或完全重叠的两个或多个布局客体的公共区域。
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