słownik polsko - angielski
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nie do pokonania po angielsku:
1. 
insurmountable
The language difference proved an insurmountable barrier.
An insurmountable problem
The odds were seemingly insurmountable but he overcame them to win the presidency.
Angielskie słowo "nie do pokonania" (insurmountable) występuje w zestawach:
Scientist who edited babies’ genes says he acted ‘...Fiszki z książki - "Beside the Still Waters A Serm...
Fiszki z książki - "The Ancient Phonetic Alphabet ...
Taylor Folk II, Red I
how to be a winner