有些奶牛生病时角就脱落了。

Some cows lose their horns if they are sick.

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当建筑物倒塌时，它形成了一个三角形，救了我们。

When the building fell down, it made a triangle, and it saved us.

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你可以想象一下，当这只两角之间长了一棵樱桃树的高贵的雄鹿出现在我的眼前时，我是多么的惊讶。

You can imagine how astonished I was to see this noble stag with a cherry tree growing between its antlers.

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And when we talk about angular nodes, the number of angular nodes we have in an orbital is going to be equal to l.

当我们谈到角向节点时，一个轨道的,角向节点数等于ｌ

麻省理工公开课 - 化学原理课程节选

You can also have angular notes, and when we talk about an anglar node, what we're talking about is values of theta or values of phi at which the wave function, and therefore, the wave function squared, or the probability density are going to be equal to zero.

我们也可以有角向节点，当我们说道一个角向节点时，我们指的是在某个theta的值,或者phi的值的地方，波函数以及波函数的平方，或者概率密度等于零。

麻省理工公开课 - 化学原理课程节选

In contrast when we're looking at a p orbital, so any time l is equal to 1, and you look at angular part of the wave function here, what you see is the wave function either depends on theta or is dependent on both theta and phi.

相反当我们看ｐ轨道时，任何时候ｌ等于１,你们看它的角向波函数，你们可以看到它要么是和theta有关,要么是和theta和phi都有关。

麻省理工公开课 - 化学原理课程节选