first come, first served

US /ˌfɜːrst ˈkʌm ˌfɜːrst ˈsɜːrv/
"first come, first served" picture
1.

من يأتي أولاً، يُخدم أولاً

:
firstfirst things firstfirst-classfirst floorfirst namefirst classfirst aid