age group
noun [ C ] uk/ˈeɪdʒ ˌɡruːp/ us/ˈeɪdʒ ˌɡruːp/ (also age range); (age bracket)
年龄组，年龄段
people of a similar age, considered as a group
51 percent of enquiries were from those in the 25 to 40 age group. 51%前来咨询的人员处在25岁到40岁这个年龄段。
Synonym: cohort