1. 相互交流;相互沟通
    When people interact with each other or interact, they communicate as they work or spend time together.

    e.g. While the other children interacted and played together, Ted ignored them.
           当别的孩子相互交流、一起玩耍的时候,泰德对他们不予理睬。
    e.g. ...rhymes and songs to help parents interact with their babies.
           帮助父母与婴儿进行互动的童谣与歌曲

2. (人与计算机或计算机与其他机器之间)交互作用，互动
    When people interact with computers, or when computers interact with other machines, information or instructions are exchanged.

    e.g. Millions of people want new, simplified ways of interacting with a computer...
           数以百万计的人们想要新的简化方式实现人机交互。
    e.g. There will be a true global village in which telephones, computers and televisions interact.
           将会出现一个电话、电脑、电视互动的真正的地球村。

3. 相互作用;相互影响
    When one thing interacts with another or two things interact, the two things affect each other's behaviour or condition.

interact的反义词

    e.g. You have to understand how cells interact...
           你必须明白细胞是怎样相互作用的。
    e.g. Atoms within the fluid interact with the minerals that form the grains.
           液体中的原子与形成颗粒的矿物质相互作用。