本建议叙述基于SDH的传送网的功能性结构，包括网络的同步原则。

This Recommendation describes the functional architecture of transport networks including network synchronization principles for networks that are based on the SDH.

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但是书中显现出的一个普遍原则是：生活中学着何时、如何有意放弃与世界相同步调是值得的。

But one general principle that does emerge from Di Vincenzo's book is this: it pays, in life, to learn when and how to deliberately fall out of sync with the rest of the world.

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他们阐述了“不要重复自己”(Don ' t Repeat Yourself, DRY)的原则：如果您将同一信息存放在多个地方，它将失去同步，并且您不会再信任它的任何特定实例。

They explain the Don't Repeat Yourself (DRY) principle: If you have the same information in more than one place, it will get out of sync, and you no longer can trust any particular instance of it.

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