说明：VC源码在状态栏中实现文字滚动字幕的例子！

VC source to achieve the status bar text scrolling subtitles example!

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同时，当用户看文本的时候，它也可以根据眼神的移动来控制文字的滚动。

It can also scroll text on the screen in response to eye movements, sensing when the reader has reached the end of the visible text.

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Tiles有个“瞥一眼”的概念，它们可以稍稍上下滚动不长的距离，多显示一点文字和图片。

Tiles can support the idea of "peek" where they scroll up and down to show both text and images. The amount of scroll isn't very much.

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