The most common vector format by far is the ESRI Shapefile (see Resources), which stores only a single shape type; each file can contain only points or only polygons or only lines.
目前为止，最常用的矢量格式是ESRI Shapefile(见参考资料)，它只存储一种图形；每个文件只包含点或多边形或线条。
The ESRI Shapefile format has one important limitation; it can only store shapes of a single type (for example, only lines, only points, or only polygons).
ESRI Shapefile格式具有一个重要的限制；它只能存储单个类型的形状（比如，只存储线、点或多边形）。
The ESRI Shapefile format has one important limitation; it can only store shapes of a single type (for example, only lines, only points, or only polygons).
ESRI Shapefile格式具有一个重要的限制；它只能存储单个类型的形状（比如，只存储线、点或多边形）。
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