hiába fáradozik означает в английский

have nothing for one's pains▼[UK: həv ˈnʌ.θɪŋ fɔː(r) wʌnz peɪnz] [US: həv ˈnʌ.θɪŋ ˈfɔːr wʌnz ˈpeɪnz]

have one's labour for one's pains▼[UK: həv wʌnz ˈleɪb.ə(r) fɔː(r) wʌnz peɪnz] [US: həv wʌnz ˈleɪb.r̩ ˈfɔːr wʌnz ˈpeɪnz]

have one's pains for nothing▼[UK: həv wʌnz peɪnz fɔː(r) ˈnʌ.θɪŋ] [US: həv wʌnz ˈpeɪnz ˈfɔːr ˈnʌ.θɪŋ]

waste one's labour▼[UK: weɪst wʌnz ˈleɪb.ə(r)] [US: ˈweɪst wʌnz ˈleɪb.r̩]