But the former president, who is the U.N.special representative to Haiti, also painted a picture of hope for the impoverished nation during his remarks at the World Economic Forum as he called on the politicians and business leaders assembled in Davos to help rebuild Haiti.

VOA: standard.2010.01.28

And when we talk about size, I'm again just going to say the stipulation we're not talking about an absolute classical concept here, but in general we're going to picture it being much further away from the nucleus as we move up in terms of n.

当我们说到尺寸时，我们只是说――,经典的绝对的概念，而是它大约,离原子核有多远。

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And when you talk about n for an orbital, it's talking about the shell that shell is kind of what you picture when you think of a classical picture of an atom where you have 1 energy level, the next one is further out, the next one's further away.

当你们谈到，某个轨道的n时，你们说的是壳层，壳层就是,你想象，一个原子,的经典图像时的场景,你有一个能级，下一个再更远的地方，再下一个又更远。

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