en sound barrier
― DerivedFrom ⟶
Weight: 1.0
en barrier (n) Source: English Wiktionary
en sound barrier
― DerivedFrom ⟶
Weight: 1.0
en sound (n) Source: German Wiktionary
en sound barrier
― DerivedFrom ⟶
Weight: 1.0
en sound (v) Source: English Wiktionary