And resonance is the idea that sometimes one single Lewis structure does not adequately describe the electron configuration around a given molecule, so instead you need to draw two different Lewis structures to describe that more appropriately.

而所谓共振态,就是有时候一个路易斯结构不足以,完整描述一个给定分子的电子排布，因此这时你需要同时画出两个,不同的路易斯结构来描述它,这样会更恰当。

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We may be in a recession now; a lot of people are saying that, so I would be tempted to draw a new line here, somewhere around here, maybe December of 2007.

也许现在正在经历衰退,人们普遍这样认为,所以我想在这画条新的直线,画在这附近,也许是2007年12月

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