But Chad Reissig says scientists do not know a lot about them and how they interact with each other and caffeine.

VOA: special.2009.07.22

which actually helps the campus, because the students interact with each other a lot more.

实际上是有助于学校的，因为这样学生之间的互动和交流就更多了。

活泼的校园氛围 - SpeakingMax英语口语达人

So, we discuss their ideas and talk about how they interact with each other

所以，我们讨论他们的观点，也讨论他们如何相互影响彼此，

有趣的课程 - SpeakingMax英语口语达人