egyidejűen означает в английский

coevally▼adverb
[UK: kˌəʊɪvˈali] [US: kˌoʊɪvˈæli]

contemporaneously▼adverb
[UK: kən.ˌtem.pə.ˈreɪ.nɪə.sli] [US: kən.ˌtem.pə.ˈreɪ.niə.sli]