交互性的英文：
interactivity

Interactive user
交互性用户

You have to understand how cells interact.
你必须明白细胞是怎样相互作用的。

Neutralization is the interaction of a base and an acid.
中和作用是碱和酸的相互作用。

Reading is a complex and interactive process.
阅读是一个复杂和互相作用的过程。

These two programs will interact on command.
两个方案将会互相影响。

neutralization is the interaction of a base and an acid
中和作用是碱和酸的相互作用。