Now, when you starting looking for next week, you are going to see reference to a chapter, which is in the core text, and you will also see this LN, LN, LN archives.

现在，当你们开始为下礼拜阅读的时候，你们要看一章的参考资料，也就是核心文本，你们也要看这个LN档案。

麻省理工公开课 - 固态化学导论课程节选