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We see that the radius is shorter, so that means that the nitrogen-nitrogen bond is going to be shorter.
我们看到这个距离更短，这就意味着,氮与氮之间的键应该更短。
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And we can also talk about the bond length, so we might be interested in what the bond length is, what the distance between these two nuclei are.
另外一点就是键长，我们对键的长度也感兴趣，也就是两个原子核之间的距离。
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In other words, we said that in intellectual history, first you get this movement of concern about the distance between the perceiver and the perceived, a concern that gives rise to skepticism about whether we can know things as they really are.
换言之，我们曾说过在思想史上，首先你要知道,关注感知者和被感知者之间距离的运动，这种关注会让我们怀疑,自己是否弄清楚了事物的本来面目。
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Well it has to do with our distance from food, our psychological and physical distance from food, and the fact that we don't appreciate it as much as we do because it's everywhere all the time and we've been trained to eat outside of the normal meal times.
我想这和我们与食物之间的距离有关,包括与食物之间的心理距离和身体上距离,事实上,我们没有给予食物足够的重视,因为食物随手可得,无处不在,而且我们都习惯在非用餐时间吃东西
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What we're going to do in forming a molecule is just bring these two orbitals close together such that now we have their nucleus, the two nuclei, at a distance apart that's equal to the bond length.
我们在形成一个分子时要做的就是,把这两个轨道放到一起,这样我们有他们的原子核，两个原子核，它们之间的距离为键长。
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So, we can use Coulomb's force law to think and it does that, it tells us the force is a function of that distance. But what it does not tell us, which if we're trying to describe an atom we really want to know, is what happens to the distance as time passes?
来考虑这两个粒子之间的,它告诉我们力随距离的函数关系,但它不能告诉我们，而我们如果要描述,原子又非常想知道的是,距离随时间的变化时怎样的？
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So, if we look at this graph where what we're charting is the internuclear distance, so the distance between these two hydrogen atoms, as a function of energy, -- what we are going to see is a curve that looks like this -- this is the general curve that you'll see for any covalent bond, and we'll explain where that comes from in a minute.
因此，如果我们来看一看这幅曲线图,这里我们画的横坐标是核间距，也就是这两个氢原子之间的距离，纵坐标是能量，我们看到的这是能量关于核间距的曲线-,这是一条普遍的曲线，在研究任何共价键时你都会遇到，我们马上就会解释一下它是怎么来的。
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