OK. So if we have variables, one of the questions we can ask is, what's the type of the variable.
好,如果我们有了一个变量,我们要问的问题之一就是,这个变量的类型是什么?
So if you think about any one of these carbon-carbon bonds, what type of a bond would you expect that to be?
如果你们考虑任何一个碳碳键,它是什么类型的?
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