使用这些像素坐标用于渐变标绘的地图中，随后图像将被加注普通框、图像和直线。
Using these pixel coordinates for the shaded plotted map, the image is then annotated with the usual boxes, images, and lines.
矢量作图更像是用铅笔画画，先拿铅笔确定一些点，然后用直线、曲线、方框和椭圆框连接这些点。
A vector drawing is like a pencil drawing where you take a pencil from one point to another and connect the points with straight lines, curved lines, rectangles, and ellipses.
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