class: n.1.阶级;社会等级。2.学级；班级，年级，级，班；组；(有组织的)讲习班；〔美国〕同年毕业班；【军事】同年入伍士兵。3.(高低、优劣的)等级；类别。4.〔英大学〕(荣誉考试)优等；〔俚语〕高级，优秀；漂亮，优雅。5.【生物学】(分类学的)纲；【矿物】晶族。6.(一节)课。短语和例子the working class工人阶级。 No class today. 今天没课。
The group can perform call control through authority management so as to limit its users to a specific class of calls 集团可以通过权限管理来实现对呼叫的控制，使集团内用户只能进行某一类的呼叫。
