"What we are saying is that it's likely an interaction of the environment and genetic susceptibility."

VOA: standard.2010.08.09

And they can watch to see what happens in terms of their interaction with the environment.

观察发生了什么,关于这些物质,和环境的互动。

麻省理工公开课 - 媒体、教育、市场课程节选

whick like, kind of foster an interaction between students into like a really friendly environment.

就像，某种能够培养学生之间互动作用的真正友好的环境。

很好奇住宿生活 - SpeakingMax英语口语达人