The fact that Ajax lets you interact with a server without a full refresh puts the option of a stateful client back on the table.

Ajax让我们不需要进行完全刷新就可以与服务器进行交互，这一事实使有状态客户机再次成为可用选择。

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Stateful interactions between client and server can be managed on either the Web tier or the business tier.

客户机和服务器之间的有状态交互可以在web层或业务层上进行管理。

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Stateful session beans maintain a "conversational state" with the client and are good for sets of related tasks that span multiple client requests.

有状态会话bean维护客户机的“会话状态”，适合处理那些跨越多个客户机请求的任务。

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