So let's think about methane using valence bond theory.

让我们用价电子成键理论来看一看甲烷。

youdao

So the idea behind valence bond theory is very easy to understand.

价电子成键理论，非常容易理解。

youdao

So the idea behind valence bond theory is very easy to understand.

价电子成键理论，非常容易理解。

youdao