multigenerational       
adjective (also multi-generational) uk/ˌmʌl.ti.dʒen.əˈreɪ.ʃən.əl/ us/ˌmʌl.ti.dʒen.əˈreɪ.ʃən.əl/ /ˌmʌl.taɪ.dʒen.əˈreɪ.ʃən.əl/
 几代人的
consisting of or relating to more than one generation (= a group of people of about the same age)
  She grew up in a multigenerational household.
 Her appeal seems to be cross-cultural and multigenerational. 她的魅力似乎吸引了来自不同文化和不同年龄段的人。 
 These acts are increasingly drawing multi-generational audiences.
 Synonym: multigeneration
 - More examples
 - It is very normal for multigenerational families to live together for many years.
 - It's a multigenerational family saga that stretches across time and place.
 - Households in the neighbourhood usually consisted of multigenerational groups.
 - Carbon dioxide exists for hundreds of years in the atmosphere, making this a multigenerational issue.