n. 【地质学；地理学】劳亚古大陆〔被认为是古代曾存在的大陆名，包括北美洲和欧亚大陆，约在古生代末期分离开来〕。
In paleogeography, Laurasia ( or )OED was the northernmost of two supercontinents (the other being Gondwana) that formed part of the Pangaea supercontinent from approximately (Mya). It separated from Gondwana (the late Triassic era) during the breakup of Pangaea, drifting further north after the split.
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