• СТИРАТЬ/СТЕРЕТЬ ГРАНИ <ГРАНЬ> между кем, между чем{{}}
[VP; subj: usu. abstr; fixed WO]
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⇒ to make it so that the differences distinguishing, separating two or more groups or phenomena disappear:
- X стёр грани между Y-ом и Z-ом{{}}≈ X obliterated <erased, eliminated> the distinctions <the differences, the boundaries, boundary lines> between Y and Z;
- X broke down the boundaries between Y and Z.
Большой русско-английский фразеологический словарь. — М.: ACT-ПРЕСС КНИГА. С.И. Лубенская. 2004.