课程管理系统能让指导者创建并安排现有材料，便于使用。
Course management systems allow instructors to create and arrange existing materials for easy consumption.
假设我们有一个应用程序，客户可以通过该网站预订的课程，和管理人员也可以预订使用后端系统代表客户的课程。
As some say[who? - think it was Atwood among other people, but a link escapes me], an application that can do everything has already been made; it's called C.
应用推荐