As influenza viruses pass from one person, or bird, to another, they normally pick up random changes in their genes because of errors in viral replication.

当流感病毒由一个人或一只鸟传给另一个人或鸟时，由于病毒复制错误，它们通常会带上基因中的随机变化。

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Data replication moves copies of data from one location to another location.

数据复制使数据的副本从一个位置移到另一个位置。

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If the deployment policy XML file is not specified, one partition with no replication is assumed.

如果该部署策略X ML文件未指定，将假定有一个不带复制的分区。

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One replication of the experiment successfully linked a rat at Duke with one at the University of Natal in Brazil.

BBC: One rat brain 'talks' to another using electronic link

Before the structure of DNA was unscrambled no-one had a clear idea how genetic replication - one of the cornerstones of life - worked.

BBC: Francis Crick memorial at University of Cambridge

Some authors further distinguish between propagation (local replication) and migration (getting from one system to another).

CNN: Technology - Analysis: Understanding viruses