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1·So, if we take a look at what a single bond is, and let me grab some molecules here.

如果来我们看一下单键，让我拿个分子。

2·Remember, every time we have two electrons that are being Shared, that's a single bond.

还记得，每次我们有两个电子被共用，我们就有了一个单键。

3·We would predict to see a single bond between lithium, and it turns out that's what we see.

我们可以预测在锂中会看到一个单键，而实际上确实是这样的。

4·So if we look at its length, it's actually shorter than a single bond, but longer than a double bond.

因此如果我们看它的键长的话，它实际上比单键更短，却比双键更长。

5·Saturated is a single bond between carbon atoms in the fatty acid . Unsaturated is the double bond.

不同的碳长度脂肪酸和不同数量的双结合给脂肪以独特的特性。

6·Or if we look at how strong it is, it's actually stronger than a single bond, but weaker than a double bond.

或者如果我们看键的强度的话，它实际上比单键更强，而比双键更弱。

7·OK, then it says draw a single bond from each surrounding atom to the central atom, and subtract two valence electrons.

后将中心原子与其相邻原子之间，连上单键，然后减掉2个价电子。

8·so you can see that there is going to be two sets in antibonding, three sets in bonding for a net of one, giving us the single bond.

因此你能看到,反键轨道上有两组，三组成键，得到一组净成键，所以成的是单键。

9·The organic group further comprises at least one activating group on at least one carbon atom of the C-C single bond or double bond.

所述有机基团进一步包括至少一个在所述C-C单键或双键的至少一个碳原子上的活性基团。

10·And we find the same thing for these two atoms here, it's not actually a double bond, it's somewhere between a single bond and a double bond.

而且我们发现这两个原子的情况是一样的，它其实不是一个双键，而是介于单键与双键之间的。