代替

to replace / to take the place of

to substitute / to act on behalf of others / to replace / generation / dynasty / age / period / (historical) era / (geological) eon

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

substitute

to do everything oneself (idiom); not to allow others in on the act

in place of sb's parents / in loco parentis (law)