You can also drag the second (or right-click) mouse button to select a rectangular area to zoom in on.
还可以拖动第二个(或右击)鼠标按钮来选择要放大的矩形区域。
Now that the map is functional, you can zoom the map to your area of interest, rather than leaving it zoomed out to the entire United States.
地图已经可以发挥作用后,现在就可以将地图缩放到您感兴趣的区域,而不是让地图保持缩小于整个美国。
Zoom in on your general area and use your mouse to identify the precise location you want to monitor.
放大您所在的大体地区并使用鼠标来标识需要监测的精确位置。
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