1 a. one of the groups in a society that different types of people are divided into according to their jobs, income, education etc b. the system in which people are divided into these groups 社会等级制度 C U
SOCIAL GROUP
社会群体
社会阶级的不平等
2 a. a group of students who are taught together b. a group of students who finished studying together in the same year 【美】 同届毕业生; C, also + plural verb
BrE
英国英语中亦用复数动词 | BrE AmE
STUDENTS
学生
7 a group into which people or things are divided according to their quality or abilities 〔人或事物按品质或能力划分的〕等级 C
QUALITY
质量