在我们进入细节之前，我们应该看一看整个治理家族(见图“治理层级”)：治理女士生活在一个大家庭中。

Before we dive deeper into details, we shall look at the whole governance clan (see figure "governance hierarchy") : Mrs. S. Governess lives in a larger family.

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当一个模型显示大多数层级的数据源规范细节时，这对我们理解数据是不够的。

While a model displays most of the level of detail of specification from the data source, this is not enough for our understanding of the data.

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“分解的层级”是指系统各元素在那一个细节的层级上被考虑。

"Level of decomposition" refers to the level of detail at which system elements are considered.

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