Proxies have many applications, such as wrapping legacy systems, adapting interfaces to libraries, and managing copies of the real object.

代理有很多用处，比如包装遗留系统、调整库的接口、管理实际对象的副本等。

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Hence, a bottom-up analysis of these systems also has to be conducted in order to investigate wrapping and refactoring strategies.

因此，为了研究包装和重构策略，必须对这些系统进行自底向上的分析。

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When wrapping legacy systems the responsibility for the provision of such correlation information often lies with the adapter.

当包装遗留系统时，通常由适配器负责提供此类关联信息。

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Currently there are a number of ways vendors are providing virtualization on smart devices, ranging from creating encrypted folders to wrapping apps or even through virtualization of the underlying mobile operating systems.

FORBES: When Virtualization Meets Mobile