Russian ⇄ English German

стирать грани stresses
gen.	blur the lines (Taras)
стирать грань
gen.	eliminate the distinction (nofour138)
fig.	blur the line (enhanced by the classic vein-cut travertine tiles that cover the main floor, including the patios, blurring the line between inside and outside. ART Vancouver)
стирая грани
gen.	blurring the boundaries (KosinovS)