AXOs are identical AROs in many respects.
AXO對(duì)象在許多方面同ARO對(duì)象是一樣的.
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ARO trees define a hierarchy of Groups and AROs. Groups can contain other Groups and AROs.
ARO樹(shù)則定義了ARO對(duì)象及組的級(jí)別, 組可以包含其他組和ARO對(duì)象.
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