The business layer should operate on business objects — not on a particular data representation tied to the view.
业务层应该对业务对象进行操作，而不是对与视图相关的特定数据表示进行操作。
Once XDR has translated the data into the common representation, the request is transferred over the network given a transport layer protocol.
一旦 XDR 将数据转换为公共表示，需求就通过网络传输给出传输层协议。
Further, RPC includes an important interoperability layer called external data representation (XDR), which ensures that all NFS participants speak the same language when it comes to data types.
进一步来说，RPC包括重要的互操作层，称为外部数据表示(XDR)，它确保当涉及到数据类型时，所有NFS参与者使用相同的语言。
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