And we talk about two or three key things that might be really really important.

谈论两三件关键的事情,那些事情着实重要。

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When we talk about resonance structures, we're talking about cases that have the same arrangement of atoms the key is the atoms are the same, and the thing that is different is the arrangement of electrons here.

当我们讨论共振结构的时候，我们讨论的是原子排布相同情况,关键在于原子是相同的，不一样的只是电子排布。

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When we talk about resonance structures, the key word is that the electrons are delocalized.

但我们讨论共振结构的时候，关键词应该是非局域化的电子。

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