them and us
我们和他们之间的差异或对立，尤其指社会阶层、群体或团体之间的对立
口语·描述对立关系
英文释义
a division or separation between two groups, often based on differences in opinions, values, or social status
例句
In this company, it's always them and us between management and staff.
典故来源
源自社会群体对立概念，强调两个阵营的差异和隔阂。