用户在一个流行的视频前停住手掌去选定它，或者用户可以向右或左挥动快速浏览内容。
To choose an option, the user holds a palm over a particular video, or he can flip through options by waving to the right or left.
应该注意上面这段代码中所有的声明，为了完整起见，下面我们来快速浏览一下这些内容。
You should recognize all the declarations of the previous code, but I'll review them quickly for the sake of completeness.
尽管这些段落并非完全一样，但很类似，我只需用指针快速浏览过这些内容，同时也得到了作者要传达的信息。
The paragraphs aren’t identical, but similar enough that I can use my pointer to skim through the content and still get the message.
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