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eroded away 强调
地质学	размытый, размыт (It forms the Wolds of East Yorkshire, where it is about 430m thick (where it has not been eroded away). ArcticFox); размыт (It forms the Wolds of East Yorkshire, where it is about 430m thick (where it has not been eroded away). ArcticFox)
erode away
马卡罗夫	истачивать