And the whole publishing industry was very careful to keep those or some, were very careful to keep those separate and how they will be managed. That was called separation of churching state. But when we began publishing on the internet, we discovered a new kind of content which are called community content.

整个出版产业十分小心,地保持着它们或者其中一些，非常仔细地保持,它们是分开以及如何管理它们，那被,称为政教分离，但是当我们,开始在互联网上出版，我们发现一种,新内容，交错社区内容。

麻省理工公开课 - 媒体、教育、市场课程节选

And also that we know that the zero does not count as a node, if per se I actually had managed to hit zero in drawing that, so the correct answer would be the bottom one there.

另外你们要知道零点不是节点，假设说我确实把零点画成０了，那正确的结果就是底下这个。

麻省理工公开课 - 化学原理课程节选