The first UI element we create is the feed selection control located at the top-most portion of the application's UI.

我们所创建的第一个UI元素是位于此应用程序的UI最顶部的提要选择控件。

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The selection of a suitable feed depends upon many factors, such as the required surface finish, the depth of cut, and the geometry of the tool used.

合适进给的选择取决于许多因素，例如所需表面光洁度、切削深度和所用刀具的几何形状。

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This means you can add any RSS-based feed as well as our selection of sources.

这意味着你除了我们推荐的源之外还可以自己添加源。

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More in demand now are features for the growing number of users who want to watch TV on all their screens, big and small, and pull from a large selection of content options, not just the cable feed and their DVR.

CNN: New TVs driven by software and streaming, not pixels