العتبة angolul

Doorstep▼[UK: ˈdɔː.step] [US: ˈdɔːr.ˌstep]

Sill▼[UK: sɪl] [US: ˈsɪl]

Threshold▼[UK: ˈθreʃ.həʊld] [US: ˈθreʃhoʊld]