a group of similar companies or products 同类公司；同类公司产品◆a peer group of 13 global pharmaceutical companies 13 家同类的全球制药公司
a group of people of the same age, social status, etc. 同年龄组；同年龄群体；同等群体◆The workforce was divided into peer groups based on their jobs. 员工按工种被分成不同的同等群体。