此时，您就拥有了一个完全可以发挥作用的地图，可从多个资源拉入数据，包括默认的用鼠标平移以及用鼠标滑轮缩放的功能。

At this point, you have a fully functional map pulling data in from multiple sources, including default functionality to pan with the mouse and zoom in and out with the mouse wheel.

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你也许觉得你的鼠标开始有噪音了，但是这实际上只是一个默认可用的烦人音效。

You might have thought your mouse was getting more vocal, but it's actually just an annoying sound effect that's enabled by default.

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显然，在这个例子中，按钮可以拥有默认状态、鼠标悬停(mouse - over)状态和被按下(pressed)状态。

Obviously, in this example, buttons can have a default state, a mouse-over state, and a pressed state.

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