fú​yì

serve

服役 fú​yì
serve verb
to perform military service or be on active duty

He served in the army for three years.

in service verb
to be in active operational use or in commission, especially of ships, aircraft, or machinery

This nuclear submarine has been in service for over twenty years.

Frequency

Movie subtitles
7.66 per million appears in 3% of films
Written text
4.57 per million

Sources

Definitions
CC-CEDICT