"Boundary Line" in Polish — inglés-Polish dictionary | see "Boundary Line" in inglés

sustantivo
  1. granica, linia graniczna

"Boundary Line" — Collocation dictionary inglés

Boundary Line collocation
More popular variant: boundary line
Automatic translation (We do not guarantee its correctness): Granica
  1. boundary sustantivo + line sustantivo
    Very loose collocation

    To my thinking, he had already passed the boundary line.