LaurasiaWiktionary 原文构词拆分Laurentia词根/词干+Eurasia词根/词干词源说明Blend of Laurentia + Eurasia.释义（英文）专有名词 Proper noun(geology) A supercontinent which included most of the landmasses making up today's continents of the Northern Hemisphere.词族派生词（1）Laurasian