n.原始大陆(假设中的原始大陆；又称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. 劳亚古大陆北半球的原始大陆，一片假想中的大陆板块，根据板块构造理论，它分裂为北美洲、欧洲和亚洲
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. 劳亚古大陆北半球的原始大陆，一片假想中的大陆板块，根据板块构造理论，它分裂为北美洲、欧洲和亚洲。
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. 冈瓦纳大陆南半球一块假定性的大陆，根据地壳构造学说，这块大陆分离成印度，澳大利亚，南极洲，非洲和南美洲
