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simultaneously▼(occurring at the same time)adverb[UK: ˌsɪml.ˈteɪ.nɪə.sli] [US: ˌsaɪ.məl.ˈteɪ.niə.sli]
then▼(at the same time; on the other hand)adverb[UK: ðen] [US: ˈðen]
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