那些单元的要素和属性是参数化的。
Elements and properties of those elements are parameterized.
您还可以在拥有特定功能，需求或者属性的单元确认器中添加逻辑。
You can also add logic in the unit validators that pertains to specific capabilities, requirements, or attributes.
到目前为止，我们已经演示了不同种类的单元和属性确认器。
So far, we have demonstrated different kinds of unit and attribute validators.
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