替補隊員

substitute player / reserve player

to substitute for / to take the place of / to replace / for / on behalf of / to stand in for

to replace (a damaged component with a new one, an injured player with a substitute player, full-time workers with casual workers etc) / a substitute / a replacement

to repair / to patch / to mend / to make up for / to fill (a vacancy) / to supplement

squadron / team / group / CL:個|个[ge4]

team member

person / employee / member