The next article explains how we style this structure to make a drop-down menu for the primary navigation.

下一篇文章将解释如何对这个结构应用样式，从而为主导航生成下拉菜单。

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A very useful feature of Android is the hidden menu structure.

安卓一个非常有效的特性就是隐藏菜单结构。

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Since we do not need a submenu structure, a menu for the menu contribution is not required.

由于不需要子菜单结构，因此菜单组件的菜单不是必需的。

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The menu structure is easy to pick up on, as is navigating through messages.

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There's a standard-issue PowerShot interface, with a fairly straightforward menu structure, and the camera felt plenty snappy, focusing and firing off an image almost instantaneously.

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And while many have been trained on the linear menu structure of the iPod, the Sansa Connect's hybrid navigation system is a taste that would be easier to acquire if, for example, all music-related features were grouped together.

ENGADGET: Switched On: Music in the air (Part 2)