If you add the menu as a child of the label itself, then the menu might not show up at all because the label will measure the text that it holds and create a dimension that fits the text only.

如果您将菜单添加为标签的子元素，那么菜单根本就不会显示，因为标签将仅度量它所包含的文本，然后创建一个符合文本的大小。

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The dimension of content-types allows for different representations of resources (for example, in XML, HTML, and plain text) and the ability to link to resources in resource representations.

内容类型的维度支持一个资源的不同表示(例如，XML、HTML、以及纯文本)，并允许链接资源表示中的资源。

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Use to add an aligned dimension with unequal length extensions lines and dimension text between the extension lines.

用于添加延长线长度不等、尺寸文本位于延长线之间的对齐尺寸。

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Think of text messaging, but with the additional dimension of talking to a group of people, a community or even everyone in the organization.

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