To ensure accuracy, it uses the actual fossilized skeletal bones to the greatest extent possible when constructing the model.

VOA: standard.2009.12.08

I have the skeletal structure written up there, I've written it twice and you'll see why in a minute.

我已经把它的骨架结构画在上面了，我画了两遍，等会你就会知道为什么。

麻省理工公开课 - 化学原理课程节选

So, if we use those two tips to try to figure out a structure, a skeletal structure, we would get this structure here if we write out the full Lewis structure.

那么，如果我们用这两个小窍门来,尝试写出它的结构，骨架结构，我们将会得到这样的结构,如果我们把完整的路易斯结构画出来的话。

麻省理工公开课 - 化学原理课程节选

We have other ways of protecting; many of our cells are inside our body protected by specialized cells of our skeletal system.

人类有其它的保护机制,我们体内的细胞受,特化的骨骼细胞保护

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So in terms of the first step of skeletal structure, this is actually going to be easier because we don't have a central atom, we just have carbon and nitrogen here.

对于第一步画出骨架，其实比刚才更容易,因为我们没有一个中心原子，我们这里只有碳和氮两个原子。

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So, how do we figure out first how to draw the skeletal structure of this molecule here?

那么，我们如何来解决它,首先是如何画出这个分子的骨架结构？

麻省理工公开课 - 化学原理课程节选

So that's a good start for us putting together a skeletal structure for this compound here.

因此这对我们画这个化合物的,骨架结构来说是个好的开始。

麻省理工公开课 - 化学原理课程节选

It's easy to write the skeletal structure, because it's all oxygen, we don't have to worry about what's going to go in the middle.

画它的骨架结构很容易，因为它们都是氧原子，我们不需要担心哪个原子在中间的问题。

麻省理工公开课 - 化学原理课程节选

the first step in any Lewis structure is drawing the skeletal structure.

画任何路易斯结构第一步,都是先画出它的骨架。

麻省理工公开课 - 化学原理课程节选