“大陆漂移说”是解释地壳运动和现代大陆及海洋分布的一种理论,其大致思想是:在地质历史的古生代,全球只有一块陆地,叫作联合古陆(也称“原始泛大陆”或“世界洲”),古陆周围是一片大海洋;中生代以来,联合古陆开始分裂、漂移,进而形成现在的大陆、岛屿和海洋。 “The theory of continental drift” is a theory to explain the movement of the earth’s crust and the distribution of the modern continent and the oceans. The general idea is that in the Paleozoic of the geological history, there was only one land in the world called the united ancient land (also called the “primitive pan Continent ”or“ world continent ”), the ancient land is surrounded by a large ocean. Since the Mesozoic, the united ancient land began to split and drift, forming the present continent, island and sea.