该方法利用前缀信息，实现了移动距离的最优，且不增加空间复杂度。
The method USES prefix information, optimizes the shift distance, and does not need additional space complexity.
不过在某些环境下需要更多控制信息并将其以附加头的形式作为负载数据的前缀，如上面图1所示。
But under some circumstances, more control information is needed and is prefixed to the payload data in the form of additional headers, as shown in Figure 1 above.
企业、销售、财务和业务领域（RDF 表示法中的前缀）表示可在其中定义和解释业务信息的上下文。
The enterprise, sales, finance and business domains (prefixes in the RDF notation) represent contexts in which the business information can be defined and interpreted.
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