один за другим meaning in English

in order▼(in sequence)
adverb
[UK: ɪn ˈɔː.də(r)] [US: ɪn ˈɔːr.dər]

one after another▼(in single file)
adverb
[UK: wʌn ˈɑːf.tə(r) ə.ˈnʌð.ə(r)] [US: wʌn ˈæf.tər ə.ˈnʌð.r̩]

one by one▼(individually)
adverb
[UK: wʌn baɪ wʌn] [US: wʌn baɪ wʌn]

successively▼(in a serial manner)
adverb
[UK: sək.ˈse.sɪ.vli] [US: sək.ˈse.sɪ.vli]