一些线程用于处理主从服务器的同步，以便执行复制。

There are threads for handling synchronization of master and slave servers for replication.

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为了实现故障转移和冗余，MongoDB在主从配置中提供了复制特性(类似于MySQL)，从而确保节点之间的高度一致性。

MongoDB provides replication features in a master-slave configuration (similar to MySQL) for the purposes of failover and redundancy, ensuring a high level of consistency between nodes.

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在旧车牌系统下，每次车主从一个行政区移居到另一个的时候就必须更换车牌。

Under the old system, car-owners had to change their plates every time they moved from one département to another.

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He is at war and he is serving under a commander, and so the behavior of these people towards one another is not precisely like what it would be.

他们乐于战斗并服从命令,这种特殊的主从的关系,和我们所想象的完全不同

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