СТЕРЕТЬ ГРАНЬ

• 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.