一个客户端可以向服务器请求持久化对象，然后服务器以分离对象图的方式将它们返回。

A client can request persistent objects from the server, and the server sends them as a graph of detached objects.

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但是，很多时候数字可能不在服务器上，因此您需要一种方法在客户机上格式化数字，而不需要与服务器会话。

However, many times you might not be on the server, so you need a way to format Numbers on the client, without ever talking to the server.

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此外，还必须创建用于序列化客户机和服务器之间的数据流的所有代码。

You must also create all the code for serializing the data going between the client and server.

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