n.原始大陸(假設(shè)中的原始大陸；又稱supercontinent)

The protocontinent of the Northern Hemisphere, a hypothetical landmass that according to the theory of plate tectonics broke up into North America, Europe, and Asia. 勞亞古大陸北半球的原始大陸，一片假想中的大陸板塊，根據(jù)板塊構(gòu)造理論，它分裂為北美洲、歐洲和亞洲

The protocontinent of the Northern Hemisphere,a hypothetical landmass that according to the theory of plate tectonics broke up into North America,Europe,and Asia. 勞亞古大陸北半球的原始大陸，一片假想中的大陸板塊，根據(jù)板塊構(gòu)造理論，它分裂為北美洲、歐洲和亞洲。

The protocontinent of the Southern Hemisphere,a hypothetical landmass that according to the theory of plate tectonics broke up into India,Australia,Antarctica,Africa,and South America. 岡瓦納大陸南半球一塊假定性的大陸，根據(jù)地殼構(gòu)造學(xué)說，這塊大陸分離成印度，澳大利亞，南極洲，非洲和南美洲