充當

to serve as / to act as / to play the role of

to fill / to satisfy / to fulfill / to act in place of / substitute / sufficient / full

sufficient; full / to fill / to serve as; to act as / to act falsely as; to pose as

to be / to act as / manage / withstand / when / during / ought / should / match equally / equal / same / obstruct / just at (a time or place) / on the spot / right / just at

at or in the very same... / suitable / adequate / fitting / proper / to replace / to regard as / to think / to pawn / (coll.) to fail (a student)