在正常情况下，同步电机不易失去同步。
Synchronous machines do not easily fall out of step under normal conditions.
在爬网程序运行时，不同搜索源的内容可能会稍微失去同步。
The content of the different search collections might be slightly out-of-sync while crawlers are running.
如果将所有信息放在同一位置，就会减少信息失去同步的可能性。
If you put all that information in one place, you cut down on the potential for information falling out of sync.
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