lépcsőpofa angolul

notch-board▼noun
[UK: nɒtʃ bɔːd] [US: ˈnɑːtʃ ˈbɔːrd]

string-board▼noun
[UK: strɪŋ bɔːd] [US: ˈstrɪŋ ˈbɔːrd]