精品课制作，非常优秀，为了交换，吐血推荐，欢迎下载。-Class production quality is very good, in order to exchange, hematemesis recommended, please download.

某学校精品课制作，功能齐全，简单实用。入门必备-Quality classes in a school production, full-featured, simple and practical.

一个实现了精品课堂分享的网站，通过实时的更新，让用户了解最新的课堂动态，还有资源的下载和bbs等功能！-An implementation of the boutique class-sharing Web site, through real-time updates, allowing users to learn about the latest classroom dynamics, as well as resources t