Customization of a persistent closure is the ability to configure which entities are reachable from a root entity dynamically, at run time.

自定义持久化闭包指的是能够配置哪些实体可以在运行时从一个根实体动态访问。

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Notice that each root entity belongs to a separate entity group, so a single transaction cannot create or operate on more than one root entity.

注意每个根实体分别属于一个组，所以在单个事务内无法创建或操作一个以上的根实体。

youdao

A persistent closure of a managed root entity x is defined as the set of managed entities C(x) ={e}, where e is reachable from x directly or indirectly via a persistent relationship.

管理根实体 x 的一个持久化闭包被定义为一个管理实体集 C(x) ={e}，其中 e 可以直接或间接通过一个持久化关系从 x 访问。

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"You've grown up hearing voices that incessantly warn of government as nothing more than some separate, sinister entity that's at the root of all our problems, " Obama said.

NPR: Obama Dares Graduates To Reject Cynical Voices