获取工作线程上当前J2EE应用程序上下文的快照，以便在工作完成之后进行恢复。
A snapshot is taken of the current J2EE application context on the worker thread to restore later after the work completes.
在安装任何应用程序之后，许多虚拟PC程序允许您创建当前设置的快照，以便于发生故障后还原。
After any applications are installed, many virtual PC programs allow you to take a snapshot of current Settings to facilitate restoration following a failure.
在安装任何应用程序之后，许多虚拟PC程序允许您创建当前设置的快照，以便于发生故障后还原。
After any applications are installed, many virtual PC programs allow you to take a snapshot of current Settings to facilitate restoration following a failure.
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