空军基地

air base

empty / air / sky / in vain

to empty / vacant / unoccupied / space / leisure / free time

air force

(bound form) army / military

(bound form) base; foundation / (bound form) radical (chemistry) / (bound form) gay (loanword from English into Cantonese, Jyutping: gei1, followed by orthographic borrowing from Cantonese)

base (of operations) / industrial or military base / al-Qaeda

-ly / structural particle: used before a verb or adjective, linking it to preceding modifying adverbial adjunct

earth / ground / field / place / land / CL:片[pian4]

naval and air military base