This mapping is what is called a model, a representation of the data source structure modelled for user consumption.

这种映射被称为模型，即为了便于用户使用而建模的数据源结构表示。

youdao

This mapping is what is called a model, a representation of the data source structure modelled for user consumption.

这种映射被称为模型，即为了便于用户使用而建模的数据源结构表示。

youdao