比如一个公司的管理层，谢谢
參考答案:Management class
class此处意为：
A set, collection, group, or configuration containing members regarded as having certain attributes or traits in common; a kind or category.
种类：认为具有某种共同属性或特点的成员组成的一群、一套或一类；一种或一类
A division based on quality, rank, or grade
等级，阶层：基于品质、阶级或等级的划分
