убедиться betyder på engelska

ensure [ensured, ensuring, ensures]▼(make sure or certain)
verb
[UK: ɪn.ˈʃʊə(r)] [US: en.ˈʃʊr]

ascertain [ascertained, ascertaining, ascertains]▼(find out; discover or establish)
verb
[UK: ˌæ.sə.ˈteɪn] [US: ˌæ.sər.ˈteɪn]