前輩 angolul

senior [seniors]▼(someone older than someone else)
noun
[UK: ˈsiː.nɪə(r)] [US: ˈsiː.njər]

old-timer [old-timers]▼(one who has been around for a long time or has a great deal of experience)
noun
[UK: əʊld ˈtaɪm.ə(r)] [US: oʊld ˈtaɪm.ər]