обивать все пороги znamená v Angličtina

leave no stone unturned▼(search thoroughly)
verb
[UK: liːv nəʊ stəʊn ʌn.ˈtɜːnd] [US: ˈliːv ˈnoʊ ˈstoʊn ʌn.ˈtɝːnd]