n.交互性；互动
Mother and baby interact in a very complex way. 母亲与婴儿以非常复杂的方式相互影响。
To react or interact harmoniously. 投合，契合合谐地做出反应或回应
You have to understand the way they interact. 你得理解他们相互交往的方式。
How can I use the interactivity? 我该如何使用交互功能?
Of course, teachers and students interact. 当然教与学有相互作用。
