老鳥

為什麼店裡的老鳥常常對新人好像都不是很友善?

Why are the veterans at the store often not very friendly to newcomers?

菜鳥主管如何帶領老鳥員工？

How can a rookie manager lead veteran employees?

他是公司的老鳥，什麼都知道。

He's a veteran at the company, he knows everything.