Rolling back enables you to return your environment to a stable state in your migration, minimizing downtime.

回滚允许您将环境还原到迁移中的某个稳定状态，从而可最小化停机时间。

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There are no ready-made solutions for effective migration policy, yet one possible route might be to combine short-term migration with incentives for return or circular migration.

当前的人口迁移政策中没有解决这一问题的现成方案，但一条可能的出路是将短期流动同鼓励回国措施或循环式流动结合起来。

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This will return the configuration to the state it was at prior to migration.

这会使配置返回到它在迁移之前的状态。

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The ascendance of the South's economy was a key factor behind the return migration, Frey said.

CNN: Family roots lure many African-Americans back to South

In addition, since inventory migration reflects the popularity of our rent and return anywhere capability, we have made adjustments in our field processes to minimize the impact of higher levels of migration on overall rentals.

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If we take the steps set out today, and deal with all the different avenues of migration, legal and illegal, then levels of immigration can return to where they were in the 1980s and 90s, a time when immigration was not a front rank political issue.

BBC: In full: David Cameron immigration speech