ST_Geometry, which is the supertype to all geometry types; as a function that applies to all geometry types, it is properly a method of the supertype.
作为一个应用于所有几何类型的函数，它实际上是超类型的一个方法。
ST_Geometry, which is the supertype to all geometry types; as a function that applies to all geometry types, it is properly a method of the supertype.
作为一个应用于所有几何类型的函数，它实际上是超类型的一个方法。
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