It should allow the dynamic substitution of compatible partners.

它应该允许动态替换相容的合作者。

youdao

Perhaps the easiest way to extend NIEM is through the use of substitution groups, which allow you to declare your own element and specify that it is substitutable for a NIEM element.

也许扩展NIEM最容易的方式是通过使用置换组来做到，置换组允许您声明自己的元素和指定它是NIEM元素的替代。

youdao

The accounts could then be further expanded to allow substitution of private life insurance for Social Security survivors benefits, and private disability insurance for Social Security disability benefits.

FORBES: A Personal Account Option For Social Security