Meaning of bariera dźwiękowa | Babel Free
/baˈrjɛ.ra d͡ʑvjɛŋˈkɔ.va/Definicje
(Rzeczownik)
Odpowiedniki
English
sound barrier
Poziom CEFR
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.