it's easy to have like, pretty close interaction with professors if you wanted to.

只要你想，很容易就可以和教授有很密切的互动。

要考入大学 - SpeakingMax英语口语达人

I'd like to close with a short story of recent interaction that I had with a video over the internet.

我想用一个小故事来结束,是最近我关于网络视频的互动作用。

麻省理工公开课 - 媒体、教育、市场课程节选