Old-timer
old-timer /ˈəʊldˈtaɪmə/
n. 老前辈，旧式的人，老资格的人
It means that someone has been living in a particular place or doing a particular job for a long time.
它指的是，某人长期以来，一直生活在一个特定的地方或从事某一特定工作。
He likes to listen to the stories about the old-timers.
他很喜欢听老前辈们的故事。
As an old-timer in the company, she knows things inside out.
作为公司资格较老的员工，她对很多事情都了如指掌。
