英语语法分析

Oxygen has high reactivity.

氧的反应性很高。

《牛津词典》

Now with this framework, I said that talking about these valence electrons might give us some insight into chemical reactivity.

现在在这个结构下，我说过讨论这些价电子可能会让我们对化学反应有更深的理解。

Reactivity is an increase in negative emotions or a decrease in positive emotions.

情绪反应是指消极情绪的增加或积极情绪的减少。