esriCOCA¹⁰²⁹¹⁷BNC¹²⁶⁴¹⁶⁺⁴ 基本例句 Economic and Social Research Institute Dublin 经济和社会研究所都柏林 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。 ibm